Question 1

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) All of the above
G) A) and B)

Question 2

Which of the following statements describes the correct flow of energy conversions through living systems?

Accepted Answer

A)   Chloroplasts convert solar energy to the chemical energy of nutrient molecules.
B)   Mitochondria convert ATP molecules into glucose.
C)   Chloroplasts produce CO2 and H2O during photosynthesis.
D)   Mitochondria capture solar energy and convert it to oxygen.
E)   Chloroplasts burn glucose into ATP molecules during cell respiration.F) All of the above
G) B) and C)

Question 3

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) B) and E)
G) A) and D)

Question 4

Intestinal cells absorb glucose via facilitated diffusion. 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) A) and D)
G) B) and E)

Question 5

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 or 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) A) and D)

Question 6

Where within the cell is ATP produced?

Accepted Answer

A)   mitochondria
B)   cytoplasm
C)   nucleus
D)   endoplasmic reticulum
E)   Golgi bodyF) C) and E)
G) All of the above

Question 7

When a potted houseplant is wilting, the addition of water quickly changes the look of the plant. This can be accounted for by which of the following statements?

Accepted Answer

A)   The water creates a hypertonic environment causing the cells to lose water.
B)   The water creates a hypotonic environment causing cells to lose water.
C)   The water creates a hypertonic environment causing the cells to gain water.
D)   The water creates a hypotonic environment causing the cells to gain water.
E)   The water creates an isotonic environment that allows for the cells to neither gain nor lose water.F) B) and D)
G) A) and C)

Question 8

Because it is a passive process, which membrane transport process can continue whether the cell is alive or dead?

Accepted Answer

A)   diffusion
B)   sodium/potassium pump
C)   pinocytosis
D)   phagocytosis
E)   exocytosisF) C) and D)
G) A) and E)

Question 9

Molecules move from greater to lesser concentration through a transport protein in

Accepted Answer

A)   simple diffusion.
B)   facilitated diffusion.
C)   pinocytosis.
D)   active transport.
E)   phagocytosis.F) None of the above
G) B) and E)

Question 10

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 itsOriginal 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, soF) A) and C)
G) B) and C)

Question 11

Which of the following statements most accurately describes the first law of thermodynamics?

Accepted Answer

A)   Energy can neither be created nor destroyed, but it can be changed from one form to another.
B)   One usable form of energy cannot be completely converted into another usable form.
C)   One usable form of energy can be completely converted into another usable form.
D)   Energy cannot be created or destroyed.
E)   Energy cannot be transformed.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 and active transport
C)   support for the membrane
D)   phagocytosis
E)   osmosisF) A) and B)
G) B) and D)

Question 13

In the setup shown in the figure below, which process allows the water to move across the membrane?

Accepted Answer

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

Question 14

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) A) and B)
G) A) and C)

Question 15

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) All of the above
G) C) and E)

Question 16

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) A) and E)
G) A) and D)

Question 17

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

Question 18

Probable factors that affect the passage of materials across cell membranes include all of the following except

Accepted Answer

A)   concentration.
B)   size.
C)   color.
D)   time.
E)   charge.F) A) and D)
G) B) and E)

Question 19

Energy of activation

Accepted Answer

A)   is the energy required for molecules to react with each other.
B)   requires the use of enzymes.
C)   allows for feedback inhibition.
D)   acts on the products of metabolic reactions.
E)   is a measure of the amount of solar radiation striking a leaf surface.F) A) and E)
G) C) and E)

Question 20

Which energy association is correct?

Accepted Answer

A)   Kinetic energy is energy of motion.
B)   Water stored behind a dam is an example of kinetic energy.
C)   Energy in the chemical bonds of a molecule is kinetic energy.
D)   Potential energy must be used immediately or it is lost.
E)   Light energy is a form of chemical energy.F) A) and E)
G) C) and D)

Exam 5: The Dynamic Cell

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

Correct Answer
verified

Which of the following statements describes the correct flow of energy conversions through living systems?

Correct Answer
verified

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

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

Correct Answer
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Energy of activation

Correct Answer
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Because it is a passive process, which membrane transport process can continue whether the cell is alive or dead?

Correct Answer
verified

Where within the cell is ATP produced?

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

Correct Answer
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Correct Answer
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Probable factors that affect the passage of materials across cell membranes include all of the following except

Correct Answer
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Which statement most accurately describes the second law of thermodynamics?

Correct Answer
verified

Which of the following statements most accurately describes the first law of thermodynamics?

Correct Answer
verified

Molecules move from greater to lesser concentration through a transport protein in

Correct Answer
verified

When a potted houseplant is wilting, the addition of water quickly changes the look of the plant. This can be accounted for by which of the following statements?

Correct Answer
verified

What process typically regulates the enzymes involved in metabolic reactions?

Correct Answer
verified

Which energy association is correct?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

In the setup shown in the figure below, which process allows the water to move across the membrane?

Correct Answer
verified

Once the substrate moves into the active site of the enzyme,

Correct Answer
verified

Exam 5: The Dynamic Cell

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

Correct AnswerverifiedShow Answer

Which of the following statements describes the correct flow of energy conversions through living systems?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Energy of activation

Correct AnswerverifiedShow Answer

Because it is a passive process, which membrane transport process can continue whether the cell is alive or dead?

Correct AnswerverifiedShow Answer

Where within the cell is ATP produced?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Probable factors that affect the passage of materials across cell membranes include all of the following except

Correct AnswerverifiedShow Answer

Which statement most accurately describes the second law of thermodynamics?

Correct AnswerverifiedShow Answer

Which of the following statements most accurately describes the first law of thermodynamics?

Correct AnswerverifiedShow Answer

Molecules move from greater to lesser concentration through a transport protein in

Correct AnswerverifiedShow Answer

When a potted houseplant is wilting, the addition of water quickly changes the look of the plant. This can be accounted for by which of the following statements?

Correct AnswerverifiedShow Answer

What process typically regulates the enzymes involved in metabolic reactions?

Correct AnswerverifiedShow Answer

Which energy association is correct?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In the setup shown in the figure below, which process allows the water to move across the membrane?

Correct AnswerverifiedShow Answer

Once the substrate moves into the active site of the enzyme,

Correct AnswerverifiedShow Answer

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