week 1 – day 2. obj 1 pain medications can be made as powders or tablets. the powders tend to work...
TRANSCRIPT
Week 1 – Day 2
OBJ 1Pain medications can be made as powders ortablets. The powders tend to work faster thantablets with the same ingredients becausepowder —F) dissolves faster in solution than a single
tabletG) has more total mass than a single tabletH) travels through the bloodstream moreeasily than a tabletJ) is easier to swallow than tablets
OBJ 1Pain medications can be made as powders ortablets. The powders tend to work faster thantablets with the same ingredients becausepowder —
dissolves faster in solution than a single tablet
HOW TO GET THINGS TO DISSOLVE FASTER
• --CRUSH IT• --HEAT IT• --STIR IT
• CRUSHING IT INCREASES SURFACE AREA…so IT HELPS IT DISSOLVE FASTER…........
OBJ 1
Which of the following will allow measurement of a liquid’s volume with the greatest precision?
A)50 mL cylinder graduated in 1 mL incrementsB)100 mL cylinder graduated in 0.5 mL incrementsC)100 mL cylinder graduated in 1 mL incrementsD) 200 mL cylinder graduated in 5 mL increments
OBJ 1
THE MORE LINES (INCREMENTS)….the more precision…..
100 ml graduated cylinder graduated 0.5 increments
100/0.5 = 200 lines
OBJ 1Ten different types of culture media were
inoculated with the same strain of bacteria and incubated at the same temperature. Nine of the cultures grew. Which of these conclusions can be drawn from this information?
F) The media used in the experiment are all capable of sustaining bacterial growth.
G) The temperature varied greatly during the experiment.
H) Only the culture that failed to grow bacteria was inoculated properly.
J) One of the media lacked the nutrients needed for the bacteria to grow.
OBJ 1The owner of a pet store assures a customer that
if she buys only one female hamster, she will not need to worry about the hamster having offspring, because there will be no male with which the female can breed. What possibility is the pet-store owner overlooking?
F ) The hamster could be infertile.G) The sex of the hamster could change.H) The hamster could be pregnant.J) The hamster could be a twin.
OBJ 1The owner of a pet store assures a customer that
if she buys only one female hamster, she will not need to worry about the hamster having offspring, because there will be no male with which the female can breed. What possibility is the pet-store owner overlooking?
The hamster could be pregnant.
OBJ 1Which of the following pieces of equipmentwould be most appropriate for measuring thevolume of a marble?
OBJ 1Which of the following pieces of equipmentwould be most appropriate for measuring thevolume of a marble?
OBJ 1In an investigation 10,000 dung beetles were
examined for the presence of parasites. The data showed that about 5% of the beetles had parasites. The results are —
F) invalid because only dung beetles were examined
G) unsupported because the parasite population was small
H) erroneous because more beetles should have had parasites
J) valid because the sample size was sufficient for accuracy
OBJ 1In an investigation 10,000 dung beetles were
examined for the presence of parasites. The data showed that about 5% of the beetles had parasites. The results are —
valid because the sample size was sufficient for accuracy (ALWAYS NEED A BIG SAMPLE SIZE)
OBJ 2The medulla, part of the brain stem, reactsquickly to increased levels of CO2 in the blood
and stimulates a response from the —
A excretory systemB immune systemC respiratory systemD integumentary system
OBJ 2The medulla, part of the brain stem, reactsquickly to increased levels of CO2 in the blood
and stimulates a response from the —
respiratory system
OBJ 2 Energy conversion within an animal cellwould be severely limited by removal of thecell’s —
A) mitochondriaB) chloroplastsC) plastidsD) lysosomes
OBJ 2 Energy conversion within an animal cellwould be severely limited by removal of thecell’s —
A) mitochondria
OBJ 2Multicellular eukaryotes that are usuallymobile and obtain food from other organismsprobably belong to the kingdom —
A) PlantaeB) FungiC) AnimaliaD) Protista
OBJ 2Multicellular eukaryotes that are usuallymobile and obtain food from other organismsprobably belong to the kingdom —
Animalia
OBJ 2Which system is responsible for producingenzymes that aid in breaking down substancesto be absorbed for the body’s growth andrepair?
F) Digestive systemG) Reproductive systemH) Respiratory systemJ) Skeletal system
OBJ 2Which system is responsible for producingenzymes that aid in breaking down substancesto be absorbed for the body’s growth andrepair?
Digestive system
OBJ 2What trait will most
likely be observed in all offspring of the above set of parents?
A) Green feathersB) Yellow feathersC) Long beakD) Short beak
OBJ 2What trait will most likely be observed in all offspring of the above set of parents?
TRAITS YOU SEE = DOMINANT
Capital Letters = DominantGO WITH THE ONE WITH THE MOST
CAPITAL LETTERS
OBJ 3Which organisms in this
food web can be described as both primary and secondary
consumers?
F) Hawks G) Weasels H) Raccoons J) Mice
OBJ 3This relationship is an
example of —
A) predationB) parasitismC) mutualismD) commensalism
OBJ 3Wolves and hawks are
at the same trophic level because they —
A) both live on landB) are both large
mammalsC) both eat primary
consumersD) have similar
hunting patterns
OBJ 3Which characteristics might help aplant species survive in an area with limitedsunlight?F) Bright flowersG) Large leavesH) Short stemsJ) Thick cuticles
OBJ 3
In this food chain, the spiders are —A) producersB) primary consumersC) competitorsD) secondary consumers
OBJ 3
A person living near this pond wants to reduce the mosquito population. The mosquito population included in this food web could be reduced by —
OBJ 3
A person living near this pond wants to reduce the mosquito population. The mosquito population included in this food web could be reduced by —
ADDING MORE SHELTER FOR FROGS
OBJ 4What is the volume of a 500.00 mass sample ofseawater with a density of 1.025 g/mL?F) 487.8 gG) 500.0 g H) 512.5 gJ) 625.0 g
OBJ 4
As a scuba diver goes deeper underwater, thediver must be aware that the increasedpressure affects the human body by increasingthe —A) body’s temperatureB) amount of dissolved gases in the bodyC) amount of suspended solids in the bodyD) concentration of minerals in the body
OBJ 4What are the coefficients that
will balance this chemical equation?A 2, 1, 1B 3, 4, 2C 2, 2, 1D 4, 3, 2
OBJ 4What are the coefficients
that will balance this chemical equation?
A 2, 1, 1B 3, 4, 2C 2, 2, 1D 4, 3, 2
OBJ 4What are the coefficients
that will balance this chemical equation?
A 2, 1, 1B 3, 4, 2C 2, 2, 1D 4, 3, 2
OBJ 4What are the coefficients
that will balance this chemical equation?
A 2, 1, 1B 3, 4, 2C 2, 2, 1D 4, 3, 2
OBJ 4What are the coefficients
that will balance this chemical equation?
A 2, 1, 1B 3, 4, 2C 2, 2, 1D 4, 3, 2
OBJ 4Which of the following salts has the greatest
solubility in water at 25°C?F CaCO3
G FeSH HgCl2
J KClO4
OBJ 4
What is an example of achemical change?F Ice crackingG Sugar dissolvingH Milk souringJ Lead melting
OBJ 4
What is an example of achemical change?
Milk souring (CAN’t GET SOUR MILK BACK)
OBJ 4
Which factor makes water an effectivesolvent?F The presence of molecular oxygenG Its lack of covalent bondsH The polar nature of its moleculesJ Its abundance on Earth’s surface
OBJ 4
Which factor makes water an effectivesolvent?
WHEN THEY ASK ABOUT WATER = THINK polar
OBJ 5• The diagram represents the total travel of a
teacher on a Saturday. Which part of the trip is made at the greatest average speed?
F) QG) RH) SJ) T
OBJ 5• The diagram represents the total travel of a
teacher on a Saturday. Which part of the trip is made at the greatest average speed?
OBJ 5• The diagram represents the total travel of a
teacher on a Saturday. Which part of the trip is made at the greatest average speed?
OBJ 5
What is the current in a copper wire thathas a resistance of 2 ohms and is connectedto a 9-volt electrical source?F) 0.22 ampG) 4.5 ampsH) 11.0 ampsJ) 18.0 amps
OBJ 5
What is the current in a copper wire thathas a resistance of 2 ohms and is connectedto a 9-volt electrical source?F) 0.22 ampG) 4.5 ampsH) 11.0 ampsJ) 18.0 amps
OBJ 5• The illustration shows a student about to
throw a ball while standing on a skateboard. Which illustration below correctly shows the skateboard’s direction of motion after the student releases the ball?
OBJ 5• The illustration shows a student about to
throw a ball while standing on a skateboard. Which illustration below correctly shows the skateboard’s direction of motion after the student releases the ball?
OBJ 5
Which bike rider has the greatest momentum?
A) A 40 kg person riding at 45 km/hB) A 50 kg person riding at 35 km/hC) A 60 kg person riding at 25 km/hD) A 70 kg person riding at 15 km/h
OBJ 5Which bike rider has the greatest momentum?
A) A 40 kg person riding at 45 km/hB) A 50 kg person riding at 35 km/hC) A 60 kg person riding at 25 km/hD) A 70 kg person riding at 15 km/h
OBJ 5Which bike rider has the greatest momentum?
A) A 40 kg person riding at 45 km/hB) A 50 kg person riding at 35 km/hC) A 60 kg person riding at 25 km/hD) A 70 kg person riding at 15 km/h
OBJ 5Which bike rider has the greatest momentum?
A) A 40 kg person riding at 45 km/hB) A 50 kg person riding at 35 km/hC) A 60 kg person riding at 25 km/hD) A 70 kg person riding at 15 km/h
OBJ 5Which bike rider has the greatest momentum?
A) A 40 kg person riding at 45 km/hB) A 50 kg person riding at 35 km/hC) A 60 kg person riding at 25 km/hD) A 70 kg person riding at 15 km/h
OBJ 5Fuel cells powered by plankton from theseabed can be used to operate instrumentsthat monitor ocean currents and watertemperature. These fuel cells get their energyby converting —F chemical energy to electrical energyG electrical energy to mechanical energyH hydroelectric energy to geothermal energyJ mechanical energy to chemical energy
OBJ 5Fuel cells powered by plankton from theseabed can be used to operate instrumentsthat monitor ocean currents and watertemperature. These fuel cells get their energyby converting —
chemical energy to electrical energy
OBJ 5What is a characteristics that could help short
plants survive in areas with limited sunlight?F Broad leaf surfacesG Brightly colored flowersH Thick stemsJ Shallow roots
OBJ 5What is a characteristics that could help short
plants survive in areas with limited sunlight?
Broad leaf surfaces