Question 1

The concentration of calcium in a cell is 3%. The concentration of calcium in the surrounding fluid is 1%. How could the cell obtain more calcium?

Accepted Answer

A)   passive transport
B)   diffusion
C)   active transport
D)   osmosis
E)   pinocytosisF) A) and C)
G) D) and E)

Question 2

Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?

Accepted Answer

A)   ATP
B)   ADP
C)   adenosine
D)   AMP
E)   H+ ionsF) B) and D)
G) A) and C)

Question 3

Osmosis includes ________.

Accepted Answer

A)   a semi-permeable membrane
B)   transport proteins
C)   the diffusion of water
D)   both the diffusion of water and a semi-permeable membrane
E)   both a semi-permeable membrane and transport proteinsF) All of the above
G) A) and E)

Question 4

The part of the enzyme into which the substrate fits is called the ________.

Accepted Answer

A)   feedback site
B)   active site
C)   substrate location
D)   inhibitor
E)   soluteF) B) and E)
G) B) and D)

Question 5

Why do metabolic pathways require tens to hundreds of different enzymes?

Accepted Answer

A)   The enzymes are used up after one reaction and the molecules have to undergo multiple rearrangements.
B)   The enzyme is deformed by the interaction with the substrate and needs a period of time to return to its original reactive form so many enzymes are needed to keep the pathway going.
C)   Each enzyme has a specific substrate and produces a specific product.
D)   Multiple enzymes are not required for the pathway but having them speed up the production of the final product.
E)   The enzymes are attached to a membrane and cannot move to the location of the new intermediate so having a long line of enzymes to carry out the reaction allows the reaction to occur faster.F) A) and B)
G) None of the above

Question 6

The opposite of a turgid plant cell is a ________.

Accepted Answer

A)   hypertonic plant cell
B)   osmotic plant cell
C)   isotonic plant cell
D)   plasmolyzed plant cell
E)   ruptured plant cellF) D) and E)
G) B) and C)

Question 7

ATP releases energy when ________.

Accepted Answer

A)   a ribose is added
B)   adenine is removed
C)   a phosphate is removed
D)   deoxyribose is added
E)   sunlight strikes itF) C) and E)
G) A) and E)

Question 8

Which of the following is NOT an example of osmosis?

Accepted Answer

A)   Salting meat serves as a preservative.
B)   Vegetables placed in fresh water firm up.
C)   Sugar in coffee dissolves.
D)   Strawberries placed in sugar become syrupy.
E)   Eating salty popcorn makes people's lips dry.F) A) and B)
G) B) and D)

Question 9

Simple diffusion of molecules occurs ________.

Accepted Answer

A)   from an area of lesser concentration to an area of greater concentration
B)   in non-living systems as well as living systems
C)   across plasma membranes only through transport proteins
D)   until those molecules are more highly concentrated on one side of the plasma membrane
E)   only in molecules that are in gaseous stateF) C) and E)
G) B) and C)

Question 10

Which of the types of cellular activities listed below would not use ATP?

Accepted Answer

A)   active transport
B)   muscular contraction
C)   flagella movement
D)   passive transport
E)   protein synthesisF) C) and D)
G) A) and E)

Question 11

ATP is a good source of energy for a cell because

Accepted Answer

A)   it is able to be used in only one type of reaction.
B)   its breakdown is coupled with energy-requiring reactions.
C)   it provides excess energy for cellular reactions.
D)   it is not reusable.
E)   it takes no energy to make it.F) A) and B)
G) B) and C)

Question 12

In what function do the embedded membrane proteins at "c" serve?

Accepted Answer

A)   simple diffusion
B)   facilitated & active transport
C)   support for the membrane
D)   phagocytosis
E)   osmosisF) B) and D)
G) B) and C)

Question 13

The figure below represents a metabolic pathway, what happens if Enzyme2 is defective and non-functional? 2 is defective and non-functional?   A)  Product Z would increase in amount. B)  Substrate Y would not be metabolized. C)  Substrate X would not be metabolized. D)  Substrate X would increase in amount. E)  Substrate X is destroyed." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   Product Z would increase in amount.
B)   Substrate Y would not be metabolized.
C)   Substrate X would not be metabolized.
D)   Substrate X would increase in amount.
E)   Substrate X is destroyed.F) A) and E)
G) All of the above

Question 14

In the set-up shown in the figure below, which of the following statements would describe the conditions observed after 12 hours of time have elapsed?

Accepted Answer

A)   The beaker contents will be hypertonic to the tube contents.
B)   The tube contents will be hypertonic to the beaker contents.
C)   The beaker and tube contents are in an isotonic to each other.
D)   The beaker contents will be hypotonic to the tube contents.
E)   The beaker contents and the tube contents will not have changed at all.F) A) and D)
G) A) and E)

Question 15

Intestinal cells absorb glucose via active transport. What would happen if all the mitochondria within these intestinal cells were destroyed?

Accepted Answer

A)   Glucose absorption would increase.
B)   Glucose absorption would decrease.
C)   Glucose absorption would stop.
D)   Glucose absorption would not be affected.
E)   Glucose absorption would be slow at first and then increase.F) D) and E)
G) B) and E)

Question 16

Once the substrate moves into the active site of the enzyme

Accepted Answer

A)   the enzyme breaks the substrate into three products.
B)   the two molecules fuse together to form the product.
C)   the enzyme alters in shape to more closely fit the substrate.
D)   the substrate alters shape to more closely fit the active site.
E)   the substrate and enzyme both alter shape to fit together.F) B) and C)
G) C) and D)

Question 17

Which of the areas shown in the figure below indicates the presence of an enzyme in the movement of reactant over to product?

Accepted Answer

A)   a
B)   b
C)   c
D)   dE) A) and C)
F) All of the above

Question 18

If blood cells are placed in a hypertonic solution,

Accepted Answer

A)   the cells will shrink due to water loss by the cell.
B)   the cells will be unaffected since they have a cell membrane to separate them from the solution.
C)   the cells will swell due to diffusion.
D)   the cells will burst due to active transport.
E)   the cells will shrink due to the loss of solutes from the blood cell.F) A) and D)
G) A) and C)

Question 19

Identify which of the following statements is

Accepted Answer

A)   ATP is formed when energy is released during cell respiration.
B)   When ATP becomes ADP + P, the amount of energy released is enough for a biological purpose.
C)   ATP is comprised of a sugar, base, and two phosphate groups.
D)   ATP contains the energy form used for cellular work.
E)   ADP is low in potential energy.F) C) and E)
G) B) and E)

Question 20

Which of the following is not a mechanism used to move materials in and out of the cell?

Accepted Answer

A)   osmosis
B)   facilitated diffusion
C)   active transport
D)   feedback inhibition
E)   phagocytosisF) B) and C)
G) None of the above

Exam 5: The Dynamic Cell

The part of the enzyme into which the substrate fits is called the ________.

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Identify which of the following statements is

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Which of the types of cellular activities listed below would not use ATP?

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Which of the areas shown in the figure below indicates the presence of an enzyme in the movement of reactant over to product?

Correct AnswerverifiedShow Answer

Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?

Correct AnswerverifiedShow Answer

Simple diffusion of molecules occurs ________.

Correct AnswerverifiedShow Answer

ATP is a good source of energy for a cell because

Correct AnswerverifiedShow Answer

Osmosis includes ________.

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of osmosis?

Correct AnswerverifiedShow Answer

If blood cells are placed in a hypertonic solution,

Correct AnswerverifiedShow Answer

ATP releases energy when ________.

Correct AnswerverifiedShow Answer

Once the substrate moves into the active site of the enzyme

Correct AnswerverifiedShow Answer

In the set-up shown in the figure below, which of the following statements would describe the conditions observed after 12 hours of time have elapsed?

Correct AnswerverifiedShow Answer

Why do metabolic pathways require tens to hundreds of different enzymes?

Correct AnswerverifiedShow Answer

The concentration of calcium in a cell is 3%. The concentration of calcium in the surrounding fluid is 1%. How could the cell obtain more calcium?

Correct AnswerverifiedShow Answer

The opposite of a turgid plant cell is a ________.

Correct AnswerverifiedShow Answer

The figure below represents a metabolic pathway, what happens if Enzyme2 is defective and non-functional?

Correct AnswerverifiedShow Answer

In what function do the embedded membrane proteins at "c" serve?

Correct AnswerverifiedShow Answer

Which of the following is not a mechanism used to move materials in and out of the cell?

Correct AnswerverifiedShow Answer

Intestinal cells absorb glucose via active transport. What would happen if all the mitochondria within these intestinal cells were destroyed?

Correct AnswerverifiedShow Answer

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The figure below represents a metabolic pathway, what happens if Enzyme₂ is defective and non-functional?

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