Question 1

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. 
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.

Question 2

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)  d 
A)  a 
B)  b 
C)  c 
D)  d

Question 3

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

Question 4

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. 
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.

Question 5

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)  pinocytosis 
A)  passive transport 
B)  diffusion 
C)  active transport 
D)  osmosis 
E)  pinocytosis

Question 6

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. 
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.

Question 7

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. 
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.

Question 8

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 proteins 
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 proteins

Question 9

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 synthesis 
A)  active transport 
B)  muscular contraction 
C)  flagella movement 
D)  passive transport 
E)  protein synthesis

Question 10

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 state 
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 state

Question 11

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)  phagocytosis 
A)  osmosis 
B)  facilitated diffusion 
C)  active transport 
D)  feedback inhibition 
E)  phagocytosis

Question 12

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

Question 13

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+ ions 
A)  ATP 
B)  ADP 
C)  adenosine 
D)  AMP 
E)  H+ ions

Question 14

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. 
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.

Question 15

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. 
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.

Question 16

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)  solute 
A)  feedback site 
B)  active site 
C)  substrate location 
D)  inhibitor 
E)  solute

Question 17

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

Question 18

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. 
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.

Question 19

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. 
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.

Question 20

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

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. 
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.

Exam 5: The Dynamic Cell

Identify which of the following statements is

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

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

Which of the following is NOT an example of osmosis?

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?

If blood cells are placed in a hypertonic solution,

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

Osmosis includes ________.

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

Simple diffusion of molecules occurs ________.

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

The opposite of a turgid plant cell is a ________.

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

Once the substrate moves into the active site of the enzyme

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

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

ATP releases energy when ________.

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?

ATP is a good source of energy for a cell because

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

A View of Life

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The Organic Molecules of Life

Inside the Cell

Energy for Life

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Patterns of Inheritance

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