Question 1

The figure below reflects how these two cells would respond in a _______ environment.

Accepted Answer

A)   hypotonic
B)   isotonic
C)   hypertonic
D)   diffuse
E)   ionicF) None of the above
G) A) and B)

Question 2

The second law of thermodynamics states that all energy transformations result in more disordered energy. How can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered?

Accepted Answer

A)   living things do not obey the laws of thermodynamics
B)   this is an illusion, it only appears that glucose is more ordered
C)   photosynthesis is an exception to the second law of thermodynamics
D)   solar energy is being added to the reaction to create glucose
E)   plants are able to harness entropy and use it to carry out photosynthesisF) B) and E)
G) A) and E)

Question 3

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) None of the above
G) A) and D)

Question 4

When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called ________.

Accepted Answer

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

Question 5

Which of the following terms best describes entropy?

Accepted Answer

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

Question 6

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

Question 7

In the set-up 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) None of the above
G) All of the above

Question 8

Which is an example of potential rather than kinetic energy?

Accepted Answer

A)   an apple made up of energy-rich macromolecules
B)   a firefly using light flashes to attract a mate
C)   a skier at the bottom of a hill
D)   a pile of leaves that have been burnt
E)   a candle giving off lightF) B) and C)
G) A) and B) A

Question 9

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

Question 10

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 surfaceF) A) and B)
G) B) and E) A

Question 11

When a potted house plant 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) None of the above
G) C) and D)

Question 12

Both starch and cellulose are made by stringing together many glucose molecules, but starch is easily digested by humans while cellulose is indigestible. The starch polysaccharide has every bond occurring below the sugar rings while the bonds in cellulose alternate between one bond above the ring and the next below the ring. How can you explain the human's inability to digest cellulose?

Accepted Answer

A)   The enzyme that breaks down starch can only fit the specific bond configuration of bonds below the ring.
B)   Humans do not eat cellulose.
C)   The acidic molecules found in stomach acid cannot act on the bonds that are above the sugar rings in cellulose.
D)   The alternating bonds make the cellulose molecule too large and bulk to enter cells for digestion.
E)   Cellular respiration is only capable of breaking down specific bonds.F) C) and E)
G) A) and B) A

Question 13

Enzymes are able to speed up the rate of a reaction by

Accepted Answer

A)   carrying substrates closer together.
B)   binding substrates to a membrane.
C)   producing more enzymes.
D)   lowering the energy needed for the reaction to proceed.
E)   producing more substrate.F) B) and E)
G) B) and D)

Question 14

What is the biological risk of using salt on icy roads in parts of the country that have a cold winter season?

Accepted Answer

A)   The salt has the risk of leeching into the ground and creating a hypertonic environment for plant cells.
B)   Plant root cells will grow in excess to try to reach fresh water.
C)   Plant cells will take on excess water from the melted ice and become turgid.
D)   Salt is in limited supply in the ecosystem and this type of overuse will make it even more so.
E)   The deer in these areas have the danger of consuming too much of it as they forage for food.F) A) and C)
G) B) and E)

Question 15

Which of the following is not a type of potential energy?

Accepted Answer

A)   the energy in a glucose molecule
B)   the energy contained in an rock sitting at the top of a cliff
C)   the energy of a ball rolling down a hill
D)   the energy contained in a hamburger
E)   the energy of a diver standing on a diving boardF) A) and D)
G) A) and C)

Question 16

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)   phagocytosisF) B) and E)
G) A) and B)

Question 17

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)   chargeF) B) and C)
G) C) and D)

Question 18

When neurons release their neurotransmitters, they release them by secretory vesicles fusing with the plasma membrane thereby emptying their contents into an area that can stimulate some response. What type of cellular transport is occurring as the vesicle forms and then surfaces on the cell's plasma membrane?

Accepted Answer

A)   active transport
B)   diffusion
C)   exocytosis
D)   pinocytosis
E)   osmosisF) A) and E)
G) None of the above

Question 19

When a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the 1st law of thermodynamics?

Accepted Answer

A)   Energy is conserved.
B)   Energy can be changed from one form to another.
C)   Energy is often destroyed.
D)   All energy comes from the sun.
E)   Energy is always used up in reactions.F) None of the above
G) D) and E)

Question 20

The figure below demonstrates which key concept regarding cell activities? st law of thermodynamics C)  enzyme inhibition D)  receptor mediated endocytosis E)  active transport" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   coupled reactions
B)   the 1st law of thermodynamics
C)   enzyme inhibition
D)   receptor mediated endocytosis
E)   active transportF) C) and D)
G) A) and D)

Exam 5: The Dynamic Cell

The figure below reflects how these two cells would respond in a _______ environment.

Correct Answer
verified

The second law of thermodynamics states that all energy transformations result in more disordered energy. How can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered?

Correct Answer
verified

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

Correct Answer
verified

When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called ________.

Correct Answer
verified

Which of the following terms best describes entropy?

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

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

Correct Answer
verified

Which is an example of potential rather than kinetic energy?

Correct Answer
verified
A

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

Correct Answer
verified

Energy of activation ________.

Correct Answer
verified
A

When a potted house plant 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

Correct Answer
verified
A

Enzymes are able to speed up the rate of a reaction by

Correct Answer
verified

What is the biological risk of using salt on icy roads in parts of the country that have a cold winter season?

Correct Answer
verified

Which of the following is not a type of potential energy?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

When a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the 1^st law of thermodynamics?

Correct Answer
verified

The figure below demonstrates which key concept regarding cell activities?

Correct Answer
verified

Exam 5: The Dynamic Cell

The figure below reflects how these two cells would respond in a _______ environment.

Correct AnswerverifiedShow Answer

The second law of thermodynamics states that all energy transformations result in more disordered energy. How can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called ________.

Correct AnswerverifiedShow Answer

Which of the following terms best describes entropy?

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

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

Correct AnswerverifiedShow Answer

Which is an example of potential rather than kinetic energy?

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

Energy of activation ________.

Correct AnswerverifiedA

When a potted house plant 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

Correct AnswerverifiedA

Enzymes are able to speed up the rate of a reaction by

Correct AnswerverifiedShow Answer

What is the biological risk of using salt on icy roads in parts of the country that have a cold winter season?

Correct AnswerverifiedShow Answer

Which of the following is not a type of potential energy?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the 1st law of thermodynamics?

Correct AnswerverifiedShow Answer

The figure below demonstrates which key concept regarding cell activities?

Correct AnswerverifiedShow Answer

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A

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Correct Answer
verified

When a car burns gasoline, much of the energy is in the form of heat as the car is driven. Which of the following best describes this in relation to the 1^st law of thermodynamics?

Correct Answer
verified

Correct Answer
verified