exam 1 sc135 spring 2011 page 1 - fm faculty web...

Exam 1 SC135 spring 2011

Name:______________________________ Date:_______________________________

Which other item is worth the same (has the same weight) as your lecture exams towardyour final grade?

1

A quizzesB writing assignmentsC participationD presentationE all of the above

There is a cumulative final in this course.2

A TrueB False

Cancer3

A is a singular kind of diseaseB is a specialized tissueC is characterized by cells that divide uncontrollablyD is all of the above

By knowing there are 793,000 US citizens with skin cancer, you know something about the___________ of cancer.

4

A prevalenceB incidenceC oncologyD epidemiologyE all of the above

What characteristic of life is not shared by all living organisms?5

A they make their own energyB they grow and developC they are composed of cellsD they evolve through time

The process that an individual organism goes through to go from a single cell to its adultform is known as

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A evolutionB developmentC both evolution and development

Which of the following is likely to be able to reproduce asexually?7

A caterpillarB cricketC fishD plant

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An organism that starts as an egg, becomes a larvae then a pupae then an adult (likecaterpillars to butterflies) is displaying which characteristic of life?

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A Organisms evolveB Organisms grow and developC Organisms capture energyD Organisms are made of cells

Which of the following is an example of an organism sensing their environment?9

A feeling hungerB feeling thirstyC feeling coldD all of the above

The hereditary genetic material most organisms use for reproduction is10

A proteinB carbohydrateC lipidD DNA

All living organisms sense their environment and respond to it11

A TrueB False

Given that carbon has an atomic number of 6 and an atomic mass of 12, how manyneutrons does carbon have? (answer by entering a number)

12

Given that oxygen has an atomic number of 8 and an atomic mass of 16, oxygen has howmany valence electrons? (answer by entering a number)

13

The smallest unit of a chemical element that still has the properties of that element is a(n)14

A amino acidB moleculeC atomD bond

A neutron has _________ charge15

A noB a negativeC a positive

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Which of the following statements is true of hydrogen bonds16

A they are stronger than covalent bondsB they form between polar moleculesC they form between atoms of opposite chargeD they are due to protons repelling each other

Valence electrons17

A are all the electrons in an atomB are only those electrons in the inner most orbitalC are only those electrons in the outermost orbital

Water is a good solvent because it18

A is a polar covalent moleculeB is a covalent moleculeC is an ionic compoundD contains ions

Which atom is likely to form an anion19

A lithium (Li) - atomic number 3B fluorine (F) - atomic number 9C carbon (C) - atomic number 6D helium (He) - atomic number 2

Oil and water do not mix together well because20

A water is polar and oil is nonpolarB only identical molecules of the same chemical can easily mix togetherC water has hydrogen bonds and oil is polarD water and oil are covalently bonded together

An atom is in its most stable state when all of its electron shells are filled to capacity.21

A TrueB False

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In the diagram, the functional group shown is22

A hydroxylB aminoC carboxylD phosphate

How many atoms of oxygen are in sucrose? (the chemical formula is shown)23

A 11B 12C 22D 45

We use soap to clean ourselves better than we could with water alone. Soaps containphospholipids which are responsible for the cleansing action. Which of the followingstatements is the most likely explanation for how soap works?

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A phospholipids are ions and therefore mix with both the water and dirtB phospholipids are completely hydrophilic and therefore dirt takes the place

of the phospholipid molecules that would be dissolved in the rinse waterC the phospholipid tail attaches to the dirt while the phospholipid head

interacts with the rinse water and carries the dirt (and soap) away with itD the nonpolar fatty acid chains that make up the heads of the phospholipid

are hydrophilic and thus are repelled by the water

Peptide bonds form between25

A glycerol moleculesB all of the aboveC monosaccharidesD amino acidsE fatty acids

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Carbon dioxide (shown in the picture) is an organic molecule.26

A TrueB False

the functional group found in all organic acids is27

A hydroxylB aminoC phosphateD carboxylE acidic

The monomer of proteins is28

A amino acidB fatty acidC monosaccharideD nucleotideE peptide

Two monosaccharides are joined to form a disaccharide in the process of29

A dehydration synthesisB polymerizationC hydrolysis

You test an unknown food item in the lab using Benedict's reagent. After boiling the foodwith the reagent for 2 minutes, the color of the contents of the tube turn brick red. Fromthese results, you conclude that the food is a

30

A monosaccharideB starchC lipidD protein

Which test would you NOT do for a lipid?31

A grease spot testB solubility in polar and nonpolar solventsC sudan red testD biuret test

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Simple sugars (monosaccharides) react with Lugol's iodine.32

A TrueB False

Using the picture (figure 1 at the end of the exam), the organelle responsible for modifyingproteins is

33

ABCDE

Using the picture (figure 1 at the end of the exam), the part labeled "E" is composed of34

A amino acidsB carbohydratesC phospholipidsD nucleic acidsE fatty acids

Using the picture (figure 1 at the end of the exam), DNA is found in35

ABCDE

The boundary that surrounds the nucleus is the36

A plasma membraneB nuclear envelopeC nuclear poreD cytosol

In appearance, the Golgi apparatus resembles37

A a sphere with internal membranesB an oval without internal membranesC stacks of flattened membrane sacsD a long, fat cylinder of membrane material

Which of the following statements about mitochondria and chloroplasts is false?38

A they were probably primitive prokaryotic cellsB they contain their own DNAC they each are composed of 2 membranesD they each contain lysosomes

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The main function of mitochondria is to39

A produce energyB produce DNAC produce proteinsD produce lysosomes

You are looking at a cell under a microscope and trying to determine whether it is aprokaryote or a eukaryote. You know it is a eukaryote if you see

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A DNAB a plasma membraneC a nucleusD a cell wall

Proteins in the plasma membrane41

A are completely surrounded by phospholipidsB are able to move around in the membraneC are held rigidly in place by fatty acids and ribosomesD move molecules into but not out of cells

Information passes between the nucleus and the rest of the cell through42

A nuclear poresB nuclear envelopesC nuclear vesiclesD all of the above

The function of a ribosome is to create phospholipids43

A TrueB False

You are observing a cheek cell under the microscope and it looks 100 times bigger than ittruly is. The objective that you have in place is the

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A scanning objective (4x)B low power objective (10x)C high power objective (40x)D oil immersion objective (100x)

When using a microscope - If you have a specimen in focus and you want to changeobjectives to the next, more powerful, magnification, you should move the stage downfirst.

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A TrueB False

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The iris diaphragm helps you bring a specimen into focus.46

A TrueB False

Which molecules can diffuse into a cell?47

A OxygenB Carbon DioxideC Small hydrophobic moleculesD steroidsE all of the above

Insulin48

A diffuses into cellsB opens channel proteins so glucose can diffuse into cellsC is an active transport mechanismD all of the above

The picture depicts two solution of glucose (A is 40% glucose, B is 5% glucose) with asemi-permeable membrane between them. Which of these is true?

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A Water will flow from B to AB Water will flow from A to BC Glucose will flow from B to AD Glucose will flow from A to B

Your white blood cells engulf bacteria by50

A exocytosisB endocytosisC filipodiaD cell junctions.

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Answer Key :

Question: Answer


E1A2C3A4A5B6D7B8D9D10A116 (+/- 0%)126 (+/- 0%)13C14A15B16C17A18B19A20A21C22A23C24D25B26D27A28A29A30D31B32D33C34C35B36C37D38A39C40B41A42B43B44

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B45B46E47B48A49B50

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