PART 1. SCIENTIFIC METHODI. STEPS1.PROBLEM - always in the form of a QUESTION2.GATHER INFORMATION3. HYPOTHESIS – EDUCATED GUESS4. EXPERIMENT – test hypothesis5. OBSERVATIONS - analyze data, charts, graphs… 6. CONCLUSION - is your hypothesis right or wrong?7. Repeat

II. EXPERIMENT.

1. Example: A student set up the experiment shown to learn about plant growth. The student added a different amount of water to 4 identical containers, each containing 4 seeds in 100 cubic centimeters of soil. All of the containers were placed in the same sunny location. The height of the plants were measured and recorded for 5 weeks.

a. Hypothesis • I believe that the

plants getting the most water will grow the most.

b. Independent variable • WATER

c. Dependent variable • HEIGHT

d. Control Group = • Seeds that do not receive

water

e. 3 constants• Amount of soil, amount of

sunlight, # of seeds

f. What can be done to make the experiment more valid?

• Repeat, increase sample size, use only one variable

2. Identify 2 safety rules that must be followed when performing a lab.

•Wear goggles to protect your eyes.

•Point a test tube up and away from you and anyone else when heating up a substance.

•No fooling around in the lab.

•No eating or drinking in the lab.

•Notify the teacher if anything spills or breaks.

PART 2. MEASUREMENTI. LENGTH – meter

1. What is the length of the tadpole at the right?

In centimeters=

• 3.1 cm

In millimeters =

• 31 mm

II. MASS – • the amount of matter in an object

1. What instrument is being used to measure the mass of the object at the right?

• TRIPLE BEAM BALANCE

2. What is the mass of the object?

• 175.0 gm

III. VOLUME

• The amount of space an object takes up

1. Calculate the volume of the block below. Show all work in the work space below.

• V = l x w x h

• V = 2.4 cm x 4.2 cm x 5.3 cm

• V = 53.4 cm3

2. What is the name of

the instrument below?

• GRADUATED

CYLINDER

2. What is the name of

the instrument below?

• GRADUATED

CYLINDER

3. What is the volume of the water?

• 16mL

4. What is the volume of rock below?

• 16 mL – 14 mL

• V = 2.0 mL

IV. REVIEW QUESTIONS

1. What is the temperature shown in the thermometer shown at the right?

• 25°C

2. Convert the following measurements:

a. 2.45 cm = ?km

0.0000245 km

b. 5.46 L = ?mL

5460.0 mL

k

h

d

m

d

c

m

Base ( meter, liter, gram)

Right

Left

PART 3. MICROSCOPEI. PARTS & FUNCTIONS:1. eyepiece/ocular lens –

lens that you look through

2. body tube – connects objective & eyepiece

3. stage – holds the slide4. coarse adjustment

knob – focusing under low power.

5. mirror/light source – provides light

6. fine adjustment knob – focusing for high power

7. base – structure that supports microscope

8. objective lens – lenses that magnify

9. diaphragm – controls amount of light

10. arm – supports body tube

II. LABEL THE PARTS OF THE MICROSCOPE BELOW. Eyepiece / ocular lens

Body tube

Objective lens

Stage

Diaphragm

Mirror / light

Base

Coarse adjustment knob

Fine adjustment knob

Arm

Nosepiece

III. USING THE MICROSCOPE

1. What would happen if you used the coarse adjustment under high power?

• The lens and the slide may break!

2. When you observe a specimen using a microscope, how does the specimen appear?

• Upside down and backwards

3. When you move the slide in any direction, how does the specimen on the slide appear to move?

• In the opposite direction

4. Which objective lens allows you to observe LARGER field of view?

• Low power

5. Calculate the total magnification:

Eyepiece = 15x, Objective = 5x

• Total Mag = 75x

6. What is the student in the picture at the right preparing?

• Wet mount

7. Why should the student make sure the cover slip is lowered at an angle?

• To prevent air bubbles from forming

IV. MEASURING WITH THE MICROSCOPE1. What is the diameter

of the field of view shown below?

• 3.6 mm• 3600 um

2. What is the length of one of the cells shown below?

• 1.5/3 = • 0.5 mm• 500 um

3. Determine the lengths of the objects in the microscopes field of view below?

a. 0.8 mm

800 um

4. How many micrometers make up one millimeter?

• 1000 um

PART 4. CHEMISTRY• 1. Label the parts of the atom below,

and complete the chart.

electron

neutron

proton

SUBATOMIC PARTICLE

LOCATION CHARGE

Electron Outside nucleus (electron cloud)

Negative

Neutron Nucleus No charge

Proton Nucleus positive

• 2. DEFINE THE FOLLOWING TERMS:

• a. ELEMENT –

• Simple substance that cannot be broken down into something more simple

• b. COMPOUND –

• 2 or more elements chemically combined

• 3. Identify each property below as a physical or chemical property.

a. Burning:

• chemical

b. color:

• physical

c. phase (solid, liquid, gas):

• physical

• 4. Identify each change below as a physical or chemical change.

a. Ripping paper:

• physical

b. burning paper:

• chemical

c. melting:

• physical

d. baking a cake

• chemical

5. Fill in the chart below describing phases of matter:

PHASE OF MATTER

POSITION OF PARTICLES

SPEED

a. SOLID Tightly packed vibrating

b. LIQUID Sliding past each other

A little faster

c. GAS Very far apart Very fast

6. For each phase change below, identify how the material is changing.

a. melting:

•S L

b. freezing

•L S

c. evaporation

•L G

d. condensation

•G L

7. Identify 4 properties of metals:

• A. have luster

• B. Ductile

• C. Malleable

• D. Good conductors of heat and electricity

8. Identify 3 properties of nonmetals:

• A. brittle

• B. Dull (not shiny)

• C. Poor conductors of heat and electricity

9. Identify the parts of the periodic table being described below:

a. Rows:

• periods

b. Elements to left of zig zag line:

• metals

c. Columns:

• Groups/families

d. Noble Gases:

• Group 18

e. Group 18:

• Noble Gases

f. On zig zag line:

• Semi-metals/metalloids

g: Elements to right of zig zag line:

• nonmetals

10. Atomic number:

•# of protons

11. Mass number:

•Atomic mass rounded to nearest whole number

12. The diagram below represents n element from the period table.

Atomic #:

• 14

Atomic Mass =

• 28.0855

Mass # =

• 28

# of protons in each atom of this element =

• 14

# of neutrons

• 28-14 = 14

• 13. On the pH scale below label which section refers to acids, bases, and which pH is considered neutral.

neutral

acidsbase

PART 5. CELLSI. CELL THEORY1. Who developed the cell theory?• a. Hooke = cork under named what he

saw “cells”• b. Schleiden = all plants are made of

cells• c. Schwann = all animals are made of

cells• d. Virchow = all cells come from other

cells

2. a. List the parts of the CELL THEORY below.

• Cells are the basic unit of structure for all living things.

• Cells are the basic unit of function for all living things.

• All cells come from pre-existing cells.

II. CELL ORGANELLES1. Cell membrane – semi-

permeable 2. Nucleus – control centera. Nuclear membrane – surrounds

nucleusb. Nucleolus – produces ribosomesc. Chromosomes – genetic material3. Cytoplasm – jelly-like materials,

holds all organelles4. Mitchondria – produces energy

(by respiration) 5. Endoplasmic Reticulum –tunnels

in the cytoplasm (transport)6. Vacuoles – storage7. Ribosomes – produce proteins8. Golgi bodies – packages and

ships

III. ORGANELLES FOUND ONLY IN PLANT CELLS

1. Cell Wall – outer wall made of cellulose, protects, gives plant cell shape

2. Chloroplasts – carry out photosynthesis, contain chlorophyll (absorbs light)

IV. ORGANELLES FOUND ONLY IN ANIMAL CELLS

1. Lysosomes – contain enzymes that break down/digest materials

2. Centrioles – aid in cell division

V. LABEL THE CELLS ORGANELLES BELOW:

A. Nuclear membrane

B. Centrioles

C. Cell membrane

D. RibosomesE. CytoplasmF. Lysosome

G. VacuoleH. Golgi bodies

I. Mitochondria

J. DNA

K. NucleusL. Nucleolus

M. ER

A. ER

B. Vacuole

C. Cell wall

D. Cell membrane

E. Chloroplasts

F. Ribosome

G. DNA

H. Nucleus

I. Nuclear membrane

J. Nucleolus

K. Mitochondria

L. Cytoplasm

M. Golgi bodies

VI. TRANSPORT1. PASSIVE TRANSPORT: 2 TYPES 1. DIFFUSION – high low, WITH CONC

GRADIENT, NO ENERGY 2. OSMOSIS – diffusion of water (high low)

a. What happens to a cell if it’s placed in salt water?

• Water leaves the cell (osmosis) cell shrivels up

b. What happens if it is placed in pure water?• Water enters the cell (osmosis) swells

2. ACTIVE TRANSPORT –

• low to high,

• AGAINST CONCENTRATION GRADIENT

• ENERGY REQUIRED

a. Label each diagram as diffusion, osmosis, or active transport.

1. Active transport

2. Diffusion

(passive transport)

3. OsmosisH2O

H2OH2O

H2O

H2OH2O

VII. RESPIRATION – glucose broken down to produce ENERGY (ATP), MITOCHONDRIA

TYPES:

1. AEROBIC RESPIRATION – uses oxygen, 36 ATP

2. a. Label the equation below.

C6H12O6 + 6O2 6CO2 + 6H2O + 36ATP

glucose oxygen carbon water energy

dioxide

2. ANAEROBIC RESPIRATION – fermentation, does not require oxygen, produces only 2 ATP

a. ALCOHOLIC FERMENTATION (yeast)

C6H12O6 alcohol + CO2 + 2ATP

b. LACTIC ACID FERMENTATION (muscles)

C6H12O6 lactic acid + CO2 + 2ATP

VIII. LIVING THINGS

a. UNICELLULAR ORGANISM –

• A living thing made up of only once cell

b. MULTICELLUAR ORGANISM –

• A living thing made up of 2 or more cells

c. Identify the 5 LEVELS OF ORGANIZATION IN A MULTICELLULAR ORGANISM

CELLS TISSUES ORGANS ORGAN SYSTEM ORGANISM

d. HOMEOSTASIS –

• Maintaining a stable, internal environment

PART 6. CLASSIFICATION

I. CLASSIFICATION – grouping organisms according to similar characteristics

1. PROKARYOTIC CELL –

• Cell that does not contain a nucleus

• (Bacteria)

2. EUKARYOTIC CELL –

• Cell that has a nucleus

• Make up multicellular organisms

II. 7 LEVELS OF CLASSIFICATION:KINGDOM PHYLUM CLASS ORDER FAMILY GENUS SPECIES

(largest, most diverse) (smallest, most similar)

Kings Play Chess On Fine Green Stools

III. BINOMIAL NOMENTCALTURE• Genus species

3. Example: Homo sapiens

Homo = Genus,

sapiens = species

IV. 6 KINGDOMS1. Fill in the missing parts of the chart.

KINGDOM CHARACTERISTICS EXAMPLES

1.Eubacteria

-unicellular-prokaryotic-heterotrophic or

autotrophic

Bacteria found everywhere

2. Archae-

bacteria

unicellular-prokaryotic-heterotrophic or

autotrophic

Bacteria found in extreme environments (thermal vents)

3.PROTISTS

-unicellular-eukaryotic-heterotrophic or

autotrophic

Animal like = ameba, paramecium

Plant like = algae, euglena

KINGDOM CHARACTERISTICS EXAMPLES

4. FUNGI -heterotrophic-mostly multicellular

Mushroom, yeast, mold, mildew

5. PLANT

-multicellular-autotrophic

Trees, grass, flowers…

6. ANIMAL -multicellular

-heterotrophic

Jellyfish, humans, cats, dogs, fish, grasshoppers, bears…

I. FUNCTIONS

1. movement

2. protection & support

3. makes blood cells

4. shape

5. stores materials (calcium & phosphorus)

II. PARTS1. BONES – 206 in body bone marrow – produces blood cells

2. CARTILAGE

a. flexible

b. protection & support

c. cushioning (bw vertebrae)

d. make up body parts (nose, ears)

e. end of bones

HUMAN BODY SYSTEMSPART 7. SKELTAL SYSTEM

3. TENDONS – connective tissue which connects MUSCLES TO BONES

4. LIGAMENTS – connective tissue which connects BONE TO BONE

5. JOINT – where 2 bones meet

PART 8. MUSCULAR SYSTEM

I. FUNCTION

• LOCOMOTION (movement) by contracting and relaxing of the muscles

II. TYPES OF MUSCLESFill in the missing parts of the chart below.

MUSCLE VOLUNTARY/INVOL STRIATED/NON LOCATION

1. SKELETAL MUSCLE

voluntary STRIATED attached to bones

2. Smooth Muscle

INVOLUNTARY NONSTRIATED digestive system, blood vessels..

3. CARDIAC MUSCLE

Involuntary striated HEART

4. How do skeletal muscles WORK IN PAIRS?

• One contracts while the other relaxes.

PART 9. DIGESTIVE SYSTEM

I. FUNCTION – NUTRITION

a. INGESTION – taking in of food

b. DIGESTION – the breakdown of food

c. EGESTION – the removal of undigested wastes

1. CARBOHYDRATES • sugars & starches• provide ENERGY

2. PROTEINS• amino acids• build & repair

3. LIPIDS

• Energy, protection,

insulation

II. NUTRIENTS – substances needed by the human body 4. VITAMINS - normal

functioning

5. MINERALS - normal functioning

6. WATER - makes up body, transport, chemical reactions

III. 2 TYPES OF DIGESTION

1. MECHANICAL DIGESTION

• physical breakdown

2. CHEMICAL DIGESTION

• breaking down using ENZYMES

IV. PARTS OF DIGESTIVE SYSTEM1. MOUTH a. mechanical digestion begins

(teeth)b. chemical digestion begins –

enzymes in saliva, (starches sugar)

2. EPIGLOTTIS – closes over trachea to prevent choking

3. ESOPHAGUS – pushes food to stomach (PERISTALSIS)

4. STOMACH a. mechanical digestion - churning

food b. chemical digestion of proteinsc. mix of food = chyme5. SMALL INTESTINE – most

digestion occurs, digestion ends

a. INTESTINAL JUICES many enzymes

b. HELPER ORGANS-LIVER – makes bile,

EMULSIFICATION of fat-GALL BLADDER – stores bile-PANCREAS – pancreatic juice -

many enzymesc. ABSORBS NUTRIENTS-VILLI – folds that absorb

nutrients into bloodstream. 6. LARGE INTESTINE – water

absorbed from feces, bacteria which make vitamins

7. RECTUM – stores waste (feces)

8. ANUS – where wastes leave the body

V. LABEL THE DIAGRAM BELOW.

Mouth

Esophagus

Gall Bladder

Liver

Small Intestine

Rectum Appendix

Large intestine

Small intestine

Pancreas

stomach

Salivary glands

I. FUNCTION – TRANSPORT

II. PARTS

1. HEART – pumps blood

a. ATRIA – upper chambers

b. VENTRICLES – lower chambers

c. VALVES – prevent backflow of blood

d. SEPTUM – separates left & right sides

PART 10. CIRCULATORY SYSTEM2. BLOOD VESSELSa. ARTERIES – thickest, carry

blood AWAY from the heart-AORTA – largest artery-PULSE-GREATEST BLOOD PRESSURE

b. VEINS – carry blood to the heart-VALVES-VENA CAVA – largest

c. CAPILLARIES – thinnest, oxygen & carbon dioxide are exchanged between blood & cells, connect arteries & veins

3. Label the right and left sides of the heart, label which sides pumps oxygenated & deoxygenated blood, and label all parts of the heart. A. Aorta

B. Pulmonary Artery

D. Left AtriumC. Pulmonary Vein

E. Left VentricleF. SeptumG. Lower Vena Cava

H. Right VentricleI. Valve

J. Right Atrium

K. Upper vena cava

RIGHT - DEOXYGENATED

LEFT - OXYGENATED

3. BLOOD - connective tissue

a. PLASMA – liquid, carries materials

b. RED BLOOD CELLS contain hemoglobin, carry oxygen

c. WHITE BLOOD CELLS – fight disease

d. PLATELETS – blood clotting

Red Blood Cell

Platelet

White blood Cell

Plasma

III. BLOOD TYPES – depend on antigens found on RBC’s

1. A = A antigens, anti–B antibodies

2. B = B antigens, anti–A antibodies

3. AB = A & B antigens, no antibodies (universal acceptor)

4. O = no antigens, anti–A, anti-B antibodies (universal donor)

a. Rh factor – extra proteins on RBC’s

Rh + (have proteins), Rh – (don’t have proteins)

PART 11. IMMUNE SYSTEM

I. FUNCTION – defends the body against disease

Pathogen – disease causing organism

II. PARTS• 1st Line of Defense: physical barriers (skin, saliva, tears, gastric juice…)• 2nd Line: Inflammatory Response• 3rd Line: Antibodies – produced by WBC’s -attach to pathogens, slow

them down

III. TYPES:

1. ACTIVE IMMUNITY – immune system produces own antibodies, permanent• a. by acquiring the disease (chicken

pox)• b. by receiving a vaccination (weak or

dead antigens injected into the body)

2. PASSIVE IMMUNITY – receive antibodies from another organism, temporary

IV. Diseases

1. Infectious Disease =•Caused by pathogen, can be spread

2. Noninfectious Disease = •Not caused by pathogen, cannot be spread

3. ALLERGIES – reaction that occurs when the body is sensitive to certain substances

1. Allergen – substance body is sensitive to

2. Body produces HISTAMINES (cause symptoms)

4. AIDS•Caused by HIV virus•Kills T- cells destroys immune system

PART 12. RESPIRATORY SYSTEMI. FUNCTION – Gas ExchangeII. PARTS

1. NASAL CAVITY• a. mucus – moistens

air, traps materials• b. cilia – filters air• c. blood vessels – warm

air2. PHARYNX - throat3. LARYNX – vocal cords

(voice box)

5. TRACHEA – windpipe made of rings of cartilage

6. BRONCHI – 2 tubes that branch off trachea

7. ALVEOLI – air sacs surrounded by capillaries where oxygen & carbon dioxide are exchanged by diffusion

8. DIAPHRAGM – sheet of muscle under lungs

III. LABEL THE DIAGRAM BELOW

A

C

D

E

F

G

H

I

J

A. Nasal cavityB. Mouth

D. Bronchi C. Larynx

E. Diaphragm F. Pharynx G. Trachea H. Bronchi I. Bronchial tube

B

J. Alveoli

IV. BREATHING

1. INHALATION (breathing in)

a. diaphragm contracts (down)

b. air pressure decreases

2. EXHALATION (breathing out)

a. diaphragm relaxes (up)

b. air pressure increases

3. Breathing rate increases when amount of carbon dioxide in the blood increases.

4. Label the BELL JAR below

A

BC

D

A. Trachea

B. Bronchi

D. Diaphragm

C. Alveoli

PART 13. EXCRETORY SYSTEMI. FUNCTION – EXCRETION – removal of cellular (metabolic wastes)II. PARTS1. LIVER: Produces

UREA, DETOXIFICATION

2. LUNGS – excrete CO2

& H203. SKIN • a. excretes

perspiration (water, urea, salt)

• b. maintains body temperature

4. URINARY SYSTEM

• a. KIDNEYS – nephrons that filter the blood & maintain water balance produces URINE (water, urea, salt)

• b. URETERS – carry urine from kidneys to the bladder

• c. URINARY BLADDER – stores urine

• d. URETHRA – carries urine out of the body

III. Label the parts of the urinary system.

A

B

C

A. Kidney

B. Ureter

D. Urethra

C. Urinary bladder

D

PART 14. NERVOUS SYSTEM

I. FUNCTION

1. REGULATION

a. processes & sends out messages

b. control & coordination

c. helps to maintain homeostasis

II. PARTS

1. What is a NEURON?

• NERVE CELL

2. IMPULSE – message sent by neurons

a. STIMULUS – change in the environment that starts an impulse

3. RECEPTOR – sense organs, pick up stimuli (ears, eyes, nose, skin, tongue)

4. EFFECTOR – parts of the body that responds to a stimulus (MUSCLES & GLANDS)

5. PARTS OF A NEURON

a. dendrites – branches at start of neuron that pick up impulses

b. cell body (cyton) – contains nucleus

c. axon – long single fiber that carries impulse to end of neuron (surrounded by myelin)

d. terminal branches – branches at end of neuron

6. What is a SYNAPSE? • SPACE BETWEEN EACH

NEURON

7. NEUROTRANSMITTER – substances released into a synapse that “carries” impulse to next cell

8. Label parts of the neuron below.

A. Dendrites

B. Cell body / Cyton

D. Terminal Branches

C. Axon

E. Synapse

F

F. Schwann Cells

III. TYPES OF NEURONS• SENSORY NEURON – receptors brain & spinal cord• INTERNEURONS – make up brain & spinal cord• MOTOR NEURONS – brain & spinal cord effectors

IV. RELEX ARC (RSIME) Receptor Sensory Neuron Interneuron Motor Neuron Effector

V. REFLEX1. Reflex – involuntary response controlled by the spinal cord

VI. DIVISIONS OF THE NERVOUS SYSTEM

1. CENTRAL NERVOUS SYSTEM – brain & spinal cord

2. PERIPHERAL NERVOUS SYSTEM – branching nerves that carry messages to all body parts

VII. CENTRAL NERVOUS SYSTEM1. BRAIN (3 parts) – protected by cranium

a. Cerebrum – largest

• controls VOLUNTARY activities. the senses, thinking, memory, language…

b. Cerebellum – back

• controls BALANCE

c. Medulla – brain stem

• controls all INVOLUNTARY activities (heart beat, breathing, digestion…)

2. SPINAL CORD – protected by vertebrae

d. Label the parts of the central nervous system below.

A. Cerebrum

B. Cerebellum

D. Spinal Cord

C. Medulla

PART 15. ENDOCRINE SYSTEM

I. FUNCTION

1. REGULATION - produces hormones that control body functions

2. HORMONE

a. chemical produced by endocrine glands

b. chemical messengers that travel through the BLOODSTREAM

II. PARTS1. HYPOTHALAMUS – part of brain

that, controls the pituitary gland2. PITUITARY GLAND - in the brain• secretes hormones that control other

glands • secretes Growth hormone3. THYROID – controls metabolism4. PARATHYROIDS – controls calcium

levels 6. ADRENAL GLANDS – on top of

each kidney• ADRENALINE – released in

times of stress (increases heart rate, breathing rate…)

7. ISLETS OF LANGERHANS- on pancreas

• INSULIN – decreases blood sugar level

• GLUCAGON – increases blood sugar level

8. OVARIES – female gonads• ESTROGEN – secondary sec

characteristics9. TESTES – male gonads• TESTOSTERONE - secondary sex

characteristics

III. NEGATIVE FEEDBACK

1. How endocrine glands work

2. A hormone causes a gland to produce or stop producing another hormone

IV. LABEL THE DIAGRAM BELOW

A. Pituitary Gland

B. Thyroid

D. Thymus

C. Parathyroid

E. Adrenal Glands

F. Islets of Langerhans

G. Ovaries

H. Testes

PART 16. REPRODUCTION & DEVELOPMENT

I. ASEXUAL REPRODUCTION

1. 1 parent

2. offspring identical to parent

3. MITOSIS = 1 cell 2 cells

II. MITOSIS – cell division

1. 1 cell 2 cells that have the SAME # OF CHROMOSOMES as parent cell

2. asexual reproduction

3. production of ALL body cells EXCEPT sex cells

4. Growth and repair

III. STEPS OF MITOSIS:

1. INTERPHASE – chromosomes replicate

2. PROPHASE – nuclear membrane disappears and spindle fibers form

3. METAPHASE – chromosomes line up in middle of cell

4. ANAPHASE – chromosomes separate and move away from each other

5. TELOPHASE – nuclear membrane starts to reform

• cytokinesis – cell membrane pinches in

V. PLANT CELL MITOSIS

1. no centrioles

2. CYTOKINESIS – cell plate forms instead of cell membrane pinching in

IV. Label the steps of mitosis below.

A. Interphase

B. Prophase

C. Metaphase

D. Anaphase

E. Telophase

1. FISSION – equal division (bacteria, ameba and paramecium)

2. BUDDING – unequal division (Yeast)

VI. TYPES OF ASEXUAL REPRODUCTION3. SPORULATION – spores

develop into new organism (mold, mushrooms)

4. VEGETATIVE PROPAGATION – used by plants (NO SEEDS)

-runners (strawberries), buds/tubers (potatoes), grafting (roses), bulbs (onions)

V. SEXUAL REPRODUCTION1. 2 parents, each give sex cell

2. Offspring NOT identical to parents

3. FERTILIZATION = SPERM + EGG ZYGOTE

4. ZYGOTE DEVELOPS INTO EMBRYO (1st 8 weeks) FETUS

VI. MEIOSIS – cell division 1. 2 divisions (1 2 4)

2. for sexual reproduction

3. 4 new daughter cells with ½ the number of chromosomes as parent cell

4. TO PRODUCE SEX CELLS ONLY (in ovaries & testes)

MALES = 4 SPERM CELLS

FEMALE = 1 EGG + 3 POLAR BODIES

5. What type of organisms carry out external fertilization?

• Aquatic (fish, frogs…)

6. Why do these organisms release many sex cells at one time?

• To increase chance of fertilization

7. What type of organisms carry out internal fertilization?• Terrestrial (live on land)

VII. Metamorphosis • a. Complete = 4 stages (egg larva pupa

adult), butterfly• b. Incomplete = 3 stages = egg nymph, adult

PART 17. REPRODUCTIVE SYSTEMI. FUNCTION

1. REPRODUCTION -the process through which living things produce new individuals of the same kind

II. MALE REPRODUCTIVE SYSTEM

SPERM CELLS – male sex cells

1. TESTES -produce sperm cells and testosterone

2. SCROTUM -external organ that surrounds testes

3. SPERM DUCTS/VAS DEFERENS -tubes that carry sperm to the penis

4. GLANDS -adds liquid to sperm (semen)

5. PENIS –deposits sperm into female

6. URETHRA – tube in the penis which transports urine & semen

Urinary bladder

Vas Deferens

Gland

Glands

Testes

Urethra

Penis

Vas Deferens

III. FEMALE REPRODUCTIVE SYSTEM

EGGS – female sex cells

1. OVARIES - makes eggs and estrogen

2. FALLOPIAN TUBES - (oviduct) tubes in which an egg travels through from ovaries to the uterus

• FERTILIZATION OCCURS HERE

3. UTERUS - muscular organ where zygote attaches and develops into a baby

4. CERVIX - lower end of the uterus

5. VAGINA – birth canal, where sperm is deposited

Oviduct /Fallopian Tube

Egg (Ovulation)

Uterus

Ovary

Vagina

Cervix

IV. MENSTRUAL CYCLE (28 days)1. STEPS

a. Egg develops in ovary

b. OVULATION – egg released from ovary

c. Lining of uterus thickens with blood

d. NO FERTILIZATION MENSTRUATION (uterus lining sheds, egg leaves body)

V. EMBRYONIC DEVELOPMENT1. FERTILIZATION: EGG + SPERM ZYGOTE

(fertilized egg)

2. ZYGOTE EMBRYO (8 weeks) FETUS (after 8 weeks)

(BY CELL DIVISION)

Label the diagrams.

A B

C

E F

A. Fertilization

C. mitosis

B. Zygote

5. STRUCTURES FORMED

a. AMNIOTIC SAC – surrounds fetus & contains amniotic fluid that protects baby

b. PLACENTA – network of blood vessels where nutrients & wastes are exchanged between the mother’s blood & baby’s blood by diffusion

c. UMBILICAL CORD – blood vessels that connect the fetus to the placenta

• Carry nutrients & and wastes to and from the placenta

A. Amniotic Sac

B. Uterus

D. Umbilical Cord

C. Cervix

E. Placenta

F. fetus

IV. SEXUAL REPRODUCTION IN PLANTS (FLOWERS)1. PARTS OF A FLOWERa. PETALS – colored leaves, attract

insects for pollination

b. SEPALS – green leaves, protection

c. STAMEN – male reproductive organ

• ANTHER – produces pollen (sperm)

• FILAMENT – stem holds up anther

d. PISTIL – female reproductive organ• STIGMA – sticky part that catches

pollen• STYLE – long tube that brings

pollen to ovary

• OVARY – where eggs are produced and stored

• OVULES – in ovary, contain eggs

10

11

1. anther

2. filament

5. style

4. stigma

6. ovary

8. petal

9. sepal

10. stamen

11. pistil

1. POLLINATION - pollen lands on stigmaa. self-pollination – pollen from one flower lands on stigma of the same flower (IDENTICAL)

b. cross pollination – pollen from one flower lands on stigma of other flower

2. FERTILIZATION

1. pollen lands on stigma

2. pollen tube grows down

through the style and

carries pollen to ovary

3. sperm fertilizes egg in ovule

4. ovule SEED (embryo)

5. ovary FRUIT

VI. HOW DO FLOWERS REPRODUCE?

3. SEEDS• Embryo• Seed coat (protects embryo)• Stored food for embryo

4. GERMINATION – growth of plant embryo inside seed (sprouting)

a. For germination to occur there must be enough water, enough oxygen & right temperature

PART 18. GENETICSI. GREGOR MENDEL – crossed pea plants to study heredity

passing on of traits)

II. CHROMOSOMES –in nucleus• 1. consist of genes which contain genetic information (DNA)• 2. sex chromosomes – determine sex of an organism

a. EGGS = X SPERM = X or Y

b. FEMALE = XX MALE = XY1. GENES – 2 genes (ALLELES) for every trait (1 from each

parent)2. DOMINANT GENE/TRAIT – stronger gene – CAPITAL

LETTER (T)3. RECESSIVE GENE/TRAIT – weaker gene – lower case (t)4. PHENOTYPE – physical appearance (what offspring look like)5. GENOTYPE – genetic makeup

T = tall plant, t = short plant

GENES PHENOTYPE GENOTYPE

TT Tall Homozygous OR pure dominant

tt Short Homozygous OR pure recessive

Tt Tall Heterozygous OR hybrid

III. PUNNETT SQUARES

1. Cross a pure dominant tall plant with a hybrid plant.

T T

T

t

TT TT

Tt Tt

Phenotype = 100% tall

Genotype = 50% pure dominant 50% hybrid

2. B = Brown eyes, b = blue eyesCross a blue eyed person with a hybrid brown

eyed person. Give the phenotypes & genotypes of their offspring.

b b

B

b

Bb Bb

bb bb

Phenotype = 50% brown eyes 50% blue eyes

Genotype = 50% pure recessive 50% hybrid

3. G = green, g = yellowCross a yellow plant with a pure dominant plant. Give

the phenotypes & genotypes for all offspring.

g g

G

G

Gg Gg

Gg Gg

Phenotype = 100% green

Genotype = 100% hybrid

IV. MULTIPLE ALLELES – MORE THAN 2 GENES AVAILABLE FOR A TRAIT

1. Example: BLOOD TYPES – 3 alleles

a. A & B = both dominant

b. O = recessive

BLOOD TYPE ALLELES

A AA or AO

B BB or BO

AB AB

O OO

2. Cross a person with blood type O with a person who is pure for blood type B. What blood types will their children have?

O O

B

B

BO BO

BO BO

All of their children will have blood type B.

V. MUTATION – change in a gene that may cause a new trait (good or bad)

• a. in SEX CELLS can be passed on to offspring• b. Examples: sickle cell anemia

VI. APPLIED GENETICS• 1. Selective Breeding: crossing organisms with desirable traits

to produce offspring with those traits• a. Hybridization (different) b. Inbreeding (same/similar)• 2. Genetic Engineering: Recombinant DNA made simple

organism carried out function controlled by• complex organisms cut DNA (Example: Insulin producing

bacteria)• 3. Cloning: producing organism (CLONE) that is genetically

identical to parent

VI. PEDIGREE CHARTS - trace a genetic trait in a family

1. Example:

2. The pedigree chart below traces the appearance of earlobes through 3 generations of a family.

Based on the chart, attached earlobes is a

a. dominant trait

b. recessive trait

c. mutated trait

d. trait common in females

PART 19. PLANTS

I. PARTS OF PLANTS

1. ROOTS: absorb water & dissolved minerals, anchor plant, store food

b. root hairs – increase surface area for water absorption

2. STEM

a. supports plant, hold up leaves

b. contains VASCULAR TISSUE

XYLEM – carries water up

PHLOEM – carries food everywhere

3. LEAVES – where PHOTOSYNTHESIS occurs

a. chloroplasts – contain chlorophyll (green pigment which absorbs light)

b. Equation:

6CO2 + 6H2O C6H12O6 + 6O2

(carbon (water) (glucose) (oxygen)

dioxide)

c. SUNLIGHT = energy source

d. OXYGEN = waste product that is released into the air (oxygen we breathe)

TROPISM – how a plant responds to a stimulus

• POSITIVE = toward stimulus (Example: light) NEGATIVE = away from stimulus

PART 20. ECOLOGY

I. ECOSYSTEMS

1. ECOSYSTEM:• all the living & nonliving things in an environment

a. BIOTIC FACTORS – living things

b. ABIOTIC FACTORS – nonliving things

2. COMMUNITY – all of the different LIVING things in an ecosystem

3. POPULATION – organisms of the same SPECIES living in a community

4. NICHE

a. the role an organism plays

b. what it needs, what it eats, where it lives, how it behaves

5. HABITAT – where an organism lives

II. LIVING THINGS IN AN ECOSYSTEM1. PRODUCERS • autotrophs (plants), • get energy from the SUN• GREATEST AMOUNT OF ENERGY IN THE ECOSYSTEM

2. CONSUMERS – heterotrophs

a. HERBIVORES – eat producers (plants)

b. CARNIVORES – eat other animals

c. OMNIVORES – eat both plants and animals

d. SCAVENGERS – eat dead organisms

3. DECOMPOSERS

a. break down dead organisms into small materials & place them back into the environment to be used again

b. BACTERIA, MUSHROOMS

4. PREDATOR – living thing that hunts and kills other living things as food

5. PREY – organisms killed by predators

III. FOOD CHAIN - shows how much ENERGY is transferred1.

PRODUCER PRIMARY CONSUMER SECONDARY CONSUMER

(herbivore or omnivore) (carnivore or omnivore)

2. Label the parts of the food chain below.

a. b. c. d. e.

producer Primary consumer

Secondary consumer

carnivore

(herbivore)

3. Where is the most energy found in this food chain? Plants

Tertiary consumer

IV. FOOD WEB – overlapping food chains

1. Identify the following organisms in the food web.

a. Producers:

Grasses, bean plants

b. Herbivores:

Rabbits, caterpillars

c. Carnivores:

Frogs, trout, snakes, hawks, foxes

d. decomposers:

bacteria

V. ENERGY PYRAMID

Use the energy pyramid at the right to answer the questions below.

a. Which level contains the greatest amount of energy? • GREEN PLANTS

b. What happens to the amount of energy as it moves up the pyramid?

• IT DECREASES

c. Which organism is an herbivore? • MICE

VI. SYMBIOSIS

1. Relationship between 2 organisms where one lives on, in, or near the other

2. 3 types:

a. COMMENSALISM = 1 benefits, other not harmed/unaffected (+, -)

-mites on eyebrows

b. MUTUALISM = both benefit (+, +)

-bacteria in our intestines

c. PARASITISM = PARASITE benefits, HOST is harmed (+, -)

-fleas on dogs

VII. ECOLOGICAL SUCCESSION

1. When one community replaces another until a stable community exists

2. CLIMAX COMMUNITY – stable community, end of succession

VIII. CYCLES

1. Water Cycle (evaporation, condensation, precipitation, transpiration)

2. Carbon & Oxygen Cycle (respiration & photosynthesis

3. Nitrogen Cycle (Nitrogen changed into usable forms)

Pioneer organisms

Climax community

PART 21. EVOLUTION

I. EVOLUTION – change in a species over time

II. EVIDENCE OF EVOLUTION

1.FOSSILS – remains of living things

2.a. Law of Superposition – younger layers of sedimentary rock lay on top of older ones

b. In the diagram below, which fossil:

• OLDEST = A

• YOUNGEST = C

• MOST COMPLEX = C

• MOST SIMPLE = A

2. ANATOMICAL EVIDENCE

a. Homologous structures – structures that evolved from similar body parts

(similar structure BUT different function)

b. Examples: human arm, whale flipper, dog leg, bat wing

3. EMBRYOLOGICAL EVIDENCE

a. young embryos of different organisms are similar

4. CHEMICAL EVIDENCE

a. materials that make up organisms are similar (proteins, DNA)

III. CHARLES DARWIN

1. CHARLES DARWIN

a. Galapagos Islands

b. NATURAL SELECTION

2. NATURAL SELECTION – • those organisms best adapted to their

environment will survive & reproduce

3. ADAPTATION – a change that helps an organism better adapt to an environment survive

4. BASED ON 5 MAIN POINTS

a. OVERPRODUCTION – organisms produce too many offspring competition natural selection\

b. COMPETETION – limited resources organisms compete natural selection

c. VARIATION – differences between organisms best adapted will survive & reproduce

d. SURVIVAL OF THE FITTEST – those best adapted will survive & reproduce

e. SPECIATION – over time favorable adaptations survive & unfavorable disappear new species

IV. GRADUALISM:

• evolution happens slowly over time

V. PUNCTUATED EQUILIBRIUM:

• long periods of time with no change interrupted by short periods of change