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Unit 2 and 3 Test

Total questions: 82

Worksheet time: 41mins

Name
Class
Date
1.

What is the terminal electron acceptor in photosynthesis?

a)

NADP+

b)

NAD+

c)

Oxygen

d)

FAD

2.

What is the terminal electron acceptor in (aerobic) cellular respiration?

a)

NADP+

b)

NAD+

c)

Oxygen

d)

FAD

3.

What step/s of cellular respiration release CO2?

a)

prep reaction (oxidation of pyruvate) and Krebs

b)

Krebs only

c)

glycolysis

d)

electron transport chain

4.

What is produced during glycolysis?

a)

CO2 and Glucose

b)

NADH and FADH2

c)

NADH and ATP

d)

CO2 and ATP

5.

What is produced from the prep reaction (oxidation of pyruvate)?

a)

CO2, NADH and acetyl CoA

b)

FADH2, NADH and acetyl CoA

c)

CO2, NADH and ATP

d)

CO2, FADH2 and ATP

6.

What steps of cellular respiration produce NADH?

a)

glycolysis, prep reaction (oxidation of glucose) and Krebs

b)

prep reaction (oxidation of glucose) and Krebs

c)

Krebs only

d)

Electron transport chain

7.

What steps of cellular respiration produce FADH2?

a)

krebs only

b)

glycolysis, prep reaction (oxidation of glucose) and Krebs

c)

electron transport chain

d)

glycolysis only

8.

How does glycolysis act as evidence toward a common origin for all living organisms?

a)

it occurs in both prokaryotic and eukaryotic organisms

b)

it only occurs in prokaryotes

c)

it occurs only in eukaryotes

9.

The electron carriers in cellular respiration is/are...

a)

FAD

b)

NAD+

c)

NADP+

d)

NAD+ and FAD

10.

What are the products of the Krebs cycle?

a)

CO2, NADH, FADH2 and ATP

b)

NADH, FADH2 and ATP

c)

CO2, FADH2 and ATP

d)

CO2, NADH, and ATP

11.

What are the products of the light reactions in photosynthesis?

a)

oxygen, NADPH and ATP

b)

carbon dioxide, FAD and ATP

c)

NADH and ATP

d)

oxygen and FADH2

12.

Which products from the light reactions power the Calvin cycle?

a)

ATP and NADPH, oxygen is a waste product

b)

oxygen and NADPH, ATP is a waste product

c)

ATP and oxygen, NADPH is a waste product

d)

ATP only, NADPH and oxygen are waste products

13.

Where does the Krebs cycle take place?

a)

mitochondrial matrix

b)

inter membrane space of mitochondria

c)

cytoplasm

d)

nucleus

14.

Where does glycolysis take place?

a)

cytoplasm

b)

mitochondrial matrix

c)

inter membrane space of mitochondria

d)

nucleus

15.

Which part of photosynthesis utilizes CO2?

a)

the light reactions utilize CO2 to form carbohydrates.

b)

the Calvin cycle utilizes CO2 to form carbohydrates.

c)

both the light reactions and the Calvin cycle utilize CO2 to form carbohydrates.

d)

carbon dioxide is not a reactant of photosynthesis

16.

What molecule is split, producing oxygen and donating electrons to PSII as part of the light reactions of photosynthesis?

a)

water

b)

hydrogen peroxide

c)

nitrogen oxide

d)

carbon dioxide

17.

Which product is formed as oxygen accepts the electrons at the end of the ETC in cellular respiration, becoming reduced?

a)

water

b)

carbon dioxide

c)

hydrogen peroxide

d)

ATP

18.

What enzyme catalyzes oxidative phosphorylation?

a)

ATP synthase

b)

glucohexidase

c)

phosphatase

d)

helices

19.

How many ATP are produced by glycolysis?

a)

2

b)

1

c)

4

d)

38

20.

Assuming total efficiency, how many ATP are produced by cellular respiration?

a)

2

b)

1

c)

4

d)

38

21.

anaerobic respiration....

a)

does not use oxygen and consists of glycolysis followed by fermentation

b)

uses oxygen and consists of glycolysis followed by fermentation

c)

does not use oxygen and consists of glycolysis, Krebs and ETC

d)

uses oxygen and consists of glycolysis, Krebs and ETC

22.

aerobic respiration....

a)

does not use oxygen and consists of glycolysis followed by fermentation

b)

uses oxygen and consists of glycolysis followed by fermentation

c)

does not use oxygen and consists of glycolysis, Krebs and ETC

d)

uses oxygen and consists of glycolysis, Krebs and ETC

23.

What happens during the Calvin cycle?

a)

carbon is incorporated into biological molecules

b)

ATP is produced

c)

Oxygen is released

d)

a Hydrogen ion gradient is formed

24.

The pigment molecules responsible for capturing energy from light are _________________. These molecules are found at the center of the photosystems, and as they absorb light energy, electrons become excited before traveling down the electron transport chain,

a)

chlorophyll

b)

plastids

c)

grana

d)

leucoplasts

25.

During the light reactions of photosynthesis, energy released from the transfer of electrons along the electron transport is used to...

a)

pump hydrogen ions into the stroma, creating an electrochemical gradient

b)

pump hydrogen ions into the thylakoid space, creating an electrochemical gradient

c)

pump hydrogen ions into the cytoplasm, creating an electrochemical gradient

d)

pump hydrogen ions into the inter membrane space of the chloroplast, creating an electrochemical gradient

26.

During the electron transport chain of cellular respiration, energy released from the transfer of electrons along the electron transport is used to...

a)

pump hydrogen ions into the mitochondrial matrix, creating an electrochemical gradient

b)

pump hydrogen ions into the cytoplasm, creating an electrochemical gradient

c)

pump hydrogen ions into the mitochondria intermembrane space, creating an electrochemical gradient

27.

Oxidation is...

a)

the loss of electrons

b)

the gain of electron

28.

Reduction is...

a)

The loss of electrons

b)

The gain of electrons

29.

photosynthesis first evolved in ...

a)

prokaryotic cyanobacteria

b)

eukaryotic cyanobacteria

c)

prokaryotic plants

d)

eukaryotic cyanobacteria

30.

The first photosynthetic prokaryotes are credited with adding ______________ to Earth's atmosphere.

a)

oxygen

b)

nitrogen

c)

carbon dioxide

d)

hydrogen

31.

electron transport chains reactions can occur in ...

a)

chloroplasts and mitochondria only

b)

prokaryotic cell membranes only

c)

chloroplasts, mitochondria, and prokaryotic cell membranes

d)

mitochondria only

32.

In the absence of oxygen muscle cells switch to anaerobic respiration resulting in the production of the waste product...

a)

lactic acid

b)

alcohol

c)

acetyl coA

d)

H+

33.

chemiosmosis describes...

a)

the movement of hydrogen ions across a membrane using a protein down their gradient

b)

pumping hydrogen ions against their gradient into the inter membrane space

c)

the transfer of electrons between proteins in the ETC

d)

the transfer of electrons from water to chlorophyll during photosynthesis

34.

Photophosphorylation describes...

a)

ETC establishing a H+ gradient that is then moved down their gradient (chemiosmosis) into the stroma through ATP synthase to form ATP from ADP and P

b)

ETC establishing a H+ gradient that is then moved down their gradient (chemiosmosis) into the mitochondrial matrix through ATP synthase to form ATP from ADP and P

35.

Oxidative Phosphorylation describes...

a)

ETC establishing a H+ gradient that is then moved down their gradient (chemiosmosis) out of the thylakoid space through ATP synthase to form ATP from ADP and P

b)

ETC establishing a H+ gradient that is then moved down their gradient (chemiosmosis) into the mitochondrial matrix through ATP synthase to form ATP from ADP and P

36.

Decoupling oxidative phosphorylation and the ETC during cellular respiration results in the production of...

a)

H+ gradient

b)

heat

c)

ATP

d)

Carbon dioxide

37.

The NADH and FADH2 that donate their electrons to the ETC in cellular respiration come from...

a)

glycolysis, prep reaction (oxidation of pyruvate) and Krebs

b)

krebs only

c)

glycolysis only

d)

prep reaction (oxidation of pyruvate) and krebs

38.

In the absence of oxygen, yeast switch to a form a anaerobic respiration that leads to the formation of the waste product...

a)

ethanol

b)

lactic acid

c)

H+

d)

acetyl coA

39.

The electrons for the electron transport chain in photosynthesis originate from the splitting of...

a)

water

b)

oxygen

c)

carbon dioxide

d)

glucose

40.

when another molecule competes with a substrate for an enzyme's active site it is called:

a)

competitive inhibition

b)

noncompetitive inhibition

c)

chemiosmosis

d)

coupling

41.

when a molecule binds an allosteric site on an enzyme (outside of the enzyme's active site), changing the shape of the active site, it is called:

a)

competitive inhibition

b)

noncompetitive inhibition

c)

chemiosmosis

d)

coupling

42.

exergonic/catabolic reactions...

a)

release energy during the breakdown of molecules

b)

release energy during the building of molecules

c)

absorb energy during the building of molecules

d)

absorb energy during the breakdown of molecules

43.

endergonic/anabolic reactions...

a)

release energy during the breakdown of molecules

b)

release energy during the building of molecules

c)

absorb energy during the building of molecules

d)

absorb energy during the breakdown of molecules

44.

Increasing temperature (to a certain point) will ___________ enzymatic reaction rate.

a)

increase

b)

decrease

c)

no effect

45.

Drastic changes in pH and temperature can result in denaturation, or the loss of a protein's

a)

shape

b)

cysteine amino acids

c)

primary structure

d)

peptide bonds

46.

buffers act to reduce changes in ______.

a)

pH

b)

temperature

c)

blood glucose

d)

water concentration

47.

Describe the difference between rough ER and smooth ER.

a)

Rough ER functions in protein synthesis, Smooth ER functions in detox and lipid synthesis

b)

Rough ER functions in ribosome synthesis; Smooth ER functions in lipid synthesis

c)

Rough ER functions in detox and lipid synthesis; Smooth ER compartmentalizes cell

d)

Rough ER functions in lipid synthesis; Smooth ER functions in ribosome synthesis

48.

Which organelle is a membrane-bound structure that functions in correct folding/chemical modification of proteins?

a)

Golgi complex

b)

Lysosome

c)

Mitochondria

d)

Chloroplast

49.

Which is membrane-enclosed sacs that contain hydrolytic (digestive) enzymes?

a)

Golgi complex

b)

Lysosome

c)

Mitochondria

d)

Chloroplast

50.

Which is responsible for storage and release of macromolecules and cellular waster products. In plants, aids in turgor pressure (pushes cell membrane against cell wall).

a)

Endoplasmic Reticulum

b)

Lysosome

c)

Mitochondria

d)

Vacuoles

51.

Describe the relationship between cell size and SA:V ratios.

a)

As cells increase in size, the SA:V ratio increases

b)

As cells decrease in size, the SA:V ratio decreases

c)

As cells increase in size, the SA:V ratio decreases

d)

Cell size has no effect on the SA:V ratio

52.

Describe the characteristics of the green R groups in the integral protein pictured.

a)

hydrophilic/basic

b)

hydrophilic/polar

c)

hydrophobic/nonpolar

d)

hydrophilic/acidic

53.

Identify which of the following will easily pass through the membrane.

a)

Water

b)

Protein

c)

oxygen

d)

Charged Ion

54.

Which correctly describes molecules that will pass easily through the membrane?

a)

small, nonpolar

b)

large, polar

c)

charged

d)

ions

55.

Which of the following requires an input of energy for membrane transport?

a)

Charged ion moving against concentration gradient

b)

Water moving into a cell from a hypotonic environment t

c)

Charged ion moving with concentration gradient

d)

Water moving out of cell in a hypertonic environment

56.

Which of the following shows endocytosis?

a)
b)
c)
d)
57.

Describe the characteristics of the red and yellow R groups in the integral protein pictured.

a)

hydrophilic/nonpolar

b)

hydrophilic/polar or charged

c)

hydrophobic/nonpolar

d)

hydrophobic/polar

58.

Which of the following shows exocytosis?

a)
b)
c)
d)
59.

Which of the following shows diffusion?

a)
b)
c)
d)
60.

Which of the following is passive transport?

a)
b)
c)
d)
61.

Which of the following explains the function of the fold of the inner mitochondrial membrane?

a)

increase surface area for ATP production

b)

detoxificatoin

c)

protein synthesis

d)

modification of lipids

62.

which of the following is evidence of the endosymbiont theory?

a)

double membranes in mitochondria and chloroplasts

b)

single membrane of vacuole

c)

presence of lysosomes

d)

the cis and trans faces of the Golgi

63.

which of the following is evidence of the endosymbiont theory?

a)

ribosomes in mitochondria and chloroplasts have similar structure to those of prokaryotes

b)

cholesterol is embedded in the bilayer

c)

ATP is consumed during active transport

d)

lysosomes arise from the Golgi

64.

which of the following is evidence of the endosymbiont theory?

a)

DNA in mitochondria and chloroplasts have similar structure to DNA of prokaryotes

b)

The pores of the nuclear membrane

c)

all cells have cytoplasm

d)

cells gain water in hypotonic environments

65.

Which cell is the most efficient?

a)

Cell with SA: V of 1

b)

Cell with SA: V of 2

c)

Cell with SA: V of 3

d)

Cell with SA: V of 4

66.

Which of the following correctly explains the sodium potassium pump?

a)

3 sodium ions exit and 2 potassium ions enter, maintaining negative charge inside cell

b)

2 sodium ions exit and 3 potassium ions enter, maintaining negative charge inside cell

c)

3 sodium ions exit and 2 potassium ions enter, maintaining positive charge inside cell

d)

2 sodium ions exit and 3 potassium ions enter, maintaining positive charge inside cell

67.

what is the water potential of a cell with a solute potential of -8.0 bars and a pressure potential of 3.0 bars?

a)

-5.0 bars

b)

-6.0 bars

c)

3.0 bars

d)

-8.0 bars

68.

If a cell with a water potential of -2.5 bars in placed into a solution with a water potential of -5.0 bars, which way will water move?

a)

equally into and out of the cell

b)

out of the cell

c)

into the cell

d)

water will not move

69.

In what environment does an animal cell lyse, but a plant cell becomes turgid (firm)?

a)

hypotonic

b)

hypertonic

c)

isotonic

d)

none of these

70.

In what environment does an animal cell shrivel and plasmolysis occurs in plant cells?

a)

hypotonic

b)

hypertonic

c)

isotonic

d)

none of these

71.

In what environment is an animal cell normal, but a plant cell is flaccid (wilted)?

a)

hypotonic

b)

hypertonic

c)

isotonic

d)

none of these

72.

Which cell structures do all cells (prokaryotic and eukaryotic) have in common?

a)

cell membrane, cytoplasm, DNA, ribosomes, cytoskeleton

b)

cell membrane,mitochondria, DNA, ribosomes, cytoskeleton

c)

cell membrane, cytoplasm, DNA, ribosomes, endoplasmic reticulum

d)

nucleus, cytoplasm, DNA, ribosomes, cytoskeleton

73.

Which of the following describes the benefit of compartmentalization?

a)

eukaryotic cells can have separate internal environments for specific functions

b)

eukaryotic cells can actively transport substances across their membranes

c)

eukaryotic DNA is exposed to the cytoplasm

d)

decreased surface area for protein production in the ER

74.

Identify Golgi:

a)

6

b)

2

c)

9

d)

8

75.

Identify Rough ER:

a)

3

b)

6

c)

9

d)

8

76.

Identify Mitochondria

a)

3

b)

6

c)

9

d)

8

77.

Identify Smooth ER

a)

3

b)

6

c)

9

d)

8

78.

Identify Centrioles

a)

13

b)

6

c)

9

d)

8

79.

Which correctly describes the order which a membrane-bound protein will flow through the endomembrane system?

a)

ER, Golgi, secretory vesicle

b)

ER, nucleus, Golgi

c)

mitochondria, nucleus, ER

d)

ER, large vacuole, ER

80.

What is the role of cholesterol in the cell membrane

a)

acts as fluidity buffer

b)

transports hydrophilic substances across the membrane

c)

osmosis

d)

plays role in cell to cell recognition

81.

Which properly explains the fluidity based on phospholipid tails?

a)

saturated phospholipids increase fluidity

b)

unsaturated phospholipids decrease fluidity

c)

unsaturated phospholipids increase fluidity

d)

phospholipid saturation does not control fluidity

82.

What is the role of a contractile vacuole?

a)

maintain homeostasis in unicellular organism in hypotonic environment by removing water that enters the cell

b)

maintain homeostasis in unicellular organism in hypertonic environment by removing water that enters the cell

c)

maintain homeostasis in unicellular organism in isotonic environment by removing water that enters the cell

d)

maintain homeostasis in unicellular organism in isotonic environment by allowing water to enter the cell

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