Question 1

Which of the following shows the flow of energy at the cellular level through the biosphere?

Accepted Answer

A)   solar energy - mitochondria - chloroplast
B)   chloroplast - solar energy - mitochondria
C)   solar energy - chloroplast - mitochondria
D)   mitochondria - solar energy - chloroplast
E)   chloroplast - mitochondria - solar energyF) A) and E)
G) A) and C)

Question 2

The changing of an enzyme's shape as the substrate binds to the active site is called the

Accepted Answer

A)   substrate binding theory.
B)   induced fit model.
C)   metabolic pathway.
D)   energy of activation.
E)   enzyme binding theory.F) D) and E)
G) A) and B)

Question 3

Enzymes are named based on the substrate that they bind; this is possible because

Accepted Answer

A)   enzymes all have the same shape.
B)   an enzyme binds one specific substrate.
C)   enzymes are used up in the reaction.
D)   an enzyme is only associated with one metabolic pathway.
E)   enzymes speed up the rate of a reaction.F) A) and B)
G) All of the above

Question 4

Which of the following is best associated with a coupled reaction?

Accepted Answer

A)   ATP consumes energy from another metabolic reaction.
B)   ADP often transfers a phosphate to the reactant.
C)   The metabolic reaction requires energy from ATP.
D)   ATP gains a phosphate group.
E)   ADP is used up in the metabolic reaction.F) A) and E)
G) D) and E)

Question 5

Pickles are often preserved in a 20-30% salt solution called brine.How does this method prevent contamination by microorganisms?

Accepted Answer

A)   Bacteria can't survive in a hypertonic solution because they lose water.
B)   Bacteria can't survive in hypotonic solutions because of the added pressure of the water they take in.
C)   Bacteria cells are unable to digest the salt, thus killing the cells by starvation.
D)   The high salt concentration increases the pH of the environment, making it unfavorable for bacteria to live there.
E)   The high salt concentration creates an isotonic environment that the bacteria cannot live in.F) None of the above
G) B) and D)

Question 6

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) C) and D)
G) A) and C)

Question 7

What process typically regulates the enzymes involved in metabolic reactions?

Accepted Answer

A)   substrate inhibition
B)   entropy capture
C)   ATP blockage
D)   feedback inhibition
E)   temperature levelsF) D) and E)
G) A) and B)

Question 8

In the following figure,which cell exhibits the condition of plant cells that have been placed in a hypertonic environment?

Accepted Answer

A)   a
B)   b
C)   c
D)   Both a & b
E)   Both b & cF) All of the above
G) C) and D)

Question 9

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 E)
G) A) and B)

Question 10

A patient who is admitted to the hospital shares that she has been taking a series of "water pills" to help her lose weight.Her skin and mucous membranes are dry,and she is complaining of a headache.The physician on call asks for an IV treatment to be promptly administered.Based on the information given,what would likely be the type of IV solution given to this patient?

Accepted Answer

A)   hypotonic
B)   isotonic
C)   osmotic
D)   hypertonic
E)   saturatedF) B) and E)
G) D) and E)

Question 11

A white blood cell surrounds and engulfs a worn-out red blood cell,forming a vesicle around the red blood cell.This process is called

Accepted Answer

A)   active transport.
B)   phagocytosis.
C)   exocytosis.
D)   pinocytosis.
E)   facilitated diffusion.F) All of the above
G) A) and E)

Question 12

Which statement most accurately describes the second law of thermodynamics?

Accepted Answer

A)   Energy cannot be changed from one form to another without a loss of usable energy.
B)   One usable form of energy can be completely converted into another usable form.
C)   Energy cannot be created nor destroyed but it can be changed from one form to another.
D)   Energy cannot be created or destroyed.
E)   Energy cannot be transformed.F) A) and E)
G) C) and E)

Question 13

Which of the following terms best describes entropy?

Accepted Answer

A)   order
B)   disorder
C)   potential energy
D)   kinetic energy
E)   energy conversionsF) A) and C)
G) A) and D)

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) D) and E)
G) B) and C)

Question 15

The figure below represents a metabolic pathway,what happens if Enzyme2 is defective and nonfunctional? 2 is defective and nonfunctional?   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 D)
G) A) and B)

Question 16

Simple diffusion across a plasma membrane is called passive transport because it

Accepted Answer

A)   requires transport proteins.
B)   requires energy from the cell.
C)   does not require energy from the cell.
D)   does not require control by the nucleus.
E)   moves molecules from low to high concentration.F) D) and E)
G) B) and E)

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.F) B) and C)
G) A) and B)

Question 18

Which one of the following molecules is able to move across the cell membrane by simple diffusion?

Accepted Answer

A)   DNA
B)   hemoglobin
C)   carbon dioxide
D)   glucose
E)   starchF) B) and E)
G) C) and D)

Question 19

Which of these words does not belong with the rest as it relates to concentration gradient?

Accepted Answer

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

Question 20

The figure below demonstrates which key concept regarding cell activities?20-2013

Accepted Answer

A)   coupled reactions
B)   the first law of thermodynamics
C)   enzyme inhibition
D)   receptor mediated endocytosis
E)   active transportF) All of the above
G) A) and B)

Exam 5: The Dynamic Cell

The changing of an enzyme's shape as the substrate binds to the active site is called the

Correct Answer
verified

A white blood cell surrounds and engulfs a worn-out red blood cell,forming a vesicle around the red blood cell.This process is called

Correct Answer
verified

What process typically regulates the enzymes involved in metabolic reactions?

Correct Answer
verified

Which of these words does not belong with the rest as it relates to concentration gradient?

Correct Answer
verified

Correct Answer
verified

In the following figure,which cell exhibits the condition of plant cells that have been placed in a hypertonic environment?

Correct Answer
verified

ATP is a good source of energy for a cell because

Correct Answer
verified

Pickles are often preserved in a 20-30% salt solution called brine.How does this method prevent contamination by microorganisms?

Correct Answer
verified

Which one of the following molecules is able to move across the cell membrane by simple diffusion?

Correct Answer
verified

ATP releases energy when

Correct Answer
verified

Enzymes are named based on the substrate that they bind; this is possible because

Correct Answer
verified

Simple diffusion across a plasma membrane is called passive transport because it

Correct Answer
verified

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 Answer
verified

Which of the following shows the flow of energy at the cellular level through the biosphere?

Correct Answer
verified

Which of the following terms best describes entropy?

Correct Answer
verified

The figure below demonstrates which key concept regarding cell activities?20-2013

Correct Answer
verified

Which statement most accurately describes the second law of thermodynamics?

Correct Answer
verified

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

Correct Answer
verified

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 Answer
verified

Which of the following is best associated with a coupled reaction?

Correct Answer
verified

Exam 5: The Dynamic Cell

The changing of an enzyme's shape as the substrate binds to the active site is called the

Correct AnswerverifiedShow Answer

A white blood cell surrounds and engulfs a worn-out red blood cell,forming a vesicle around the red blood cell.This process is called

Correct AnswerverifiedShow Answer

What process typically regulates the enzymes involved in metabolic reactions?

Correct AnswerverifiedShow Answer

Which of these words does not belong with the rest as it relates to concentration gradient?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In the following figure,which cell exhibits the condition of plant cells that have been placed in a hypertonic environment?

Correct AnswerverifiedShow Answer

ATP is a good source of energy for a cell because

Correct AnswerverifiedShow Answer

Pickles are often preserved in a 20-30% salt solution called brine.How does this method prevent contamination by microorganisms?

Correct AnswerverifiedShow Answer

Which one of the following molecules is able to move across the cell membrane by simple diffusion?

Correct AnswerverifiedShow Answer

ATP releases energy when

Correct AnswerverifiedShow Answer

Enzymes are named based on the substrate that they bind; this is possible because

Correct AnswerverifiedShow Answer

Simple diffusion across a plasma membrane is called passive transport because it

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

Which of the following shows the flow of energy at the cellular level through the biosphere?

Correct AnswerverifiedShow Answer

Which of the following terms best describes entropy?

Correct AnswerverifiedShow Answer

The figure below demonstrates which key concept regarding cell activities?20-2013

Correct AnswerverifiedShow Answer

Which statement most accurately describes the second law of thermodynamics?

Correct AnswerverifiedShow Answer

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

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

Which of the following is best associated with a coupled reaction?

Correct AnswerverifiedShow Answer

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Correct Answer
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verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified