Question 1

Read the following scenario to answer the following question(s) .
Biomedical scientists have recently developed an anticancer drug delivery system that sneaks the anticancer drug into cancer cells before releasing it. They were able to do this by using two sets of liposomes. An anticancer drug (Doxorubicin (Dox) )  bound to DNA molecules was added into one set of liposomes (type A) , and a high concentration of ATP molecules were added to the other set of liposomes (type B) . The drug is inactive when bound to DNA molecules. Researchers inject both types of liposomes (A and B)  into cancer cells, and upon doing so their contents are released. The ATP molecules (from liposome type A)  bind to the DNA molecules (from liposome type B)  and activate the drug, thus inducing cell death and decreasing tumor size.
Mice with breast cancer tumors were treated with this liposome system to test the effectiveness of the drug. The scientists performed three trials one with both types of liposomes (Dox + ATP) , one with just the drug (Dox only) , and one with a salt solution (control) . Examine the figure below and answer the following questions.
 
-What statement regarding this data is TRUE?

Accepted Answer

A)   The weight of the tumors will not change if not treated with Dox or Dox + ATP.
B)   Tumor weight decreases when you add Dox only to cancer cells.
C)   Adding Dox only or Dox + ATP result in similar decreases in tumor weight.
D)   Dox is entering the cancer cells via endocytosis to induce cell death.E) A) and C)
F) B) and C)

Question 2

Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.

Accepted Answer

A)   energy... down
B)   transport proteins... down
C)   energy and transport proteins... against
D)   transport proteins... againstE) B) and C)
F) None of the above

Question 3

Diffusion ________.

Accepted Answer

A)   is the result of the potential energy of atoms
B)   requires an input of cellular energy
C)   occurs when particles spread from areas where they are less concentrated to areas where they are more concentrated
D)   proceeds until equilibrium is reachedE) A) and B)
F) All of the above

Question 4

Glucose molecules provide energy to power the swimming motion of sperm.In this example,the sperm are changing ________.

Accepted Answer

A)   chemical energy into kinetic energy
B)   chemical energy into potential energy
C)   kinetic energy into potential energy
D)   kinetic energy into chemical energyE) B) and D)
F) A) and D)

Question 5

In a hypotonic solution,a plant cell will ________.

Accepted Answer

A)   undergo plasmolysis
B)   become flaccid
C)   burst
D)   become turgidE) A) and D)
F) B) and D)

Question 6

Which one of the following is TRUE?

Accepted Answer

A)   Enzymes are the products in a chemical reaction.
B)   Enzymes are the reactants in a chemical reaction.
C)   Enzymes catalyze specific reactions.
D)   Enzymes' functions require inhibitors.E) A) and C)
F) B) and C)

Question 7

Osmosis can be defined as ________.

Accepted Answer

A)   the diffusion of water across a selectively permeable membrane
B)   the diffusion of nonpolar molecules across a selectively permeable membrane
C)   active transport across a selectively permeable membrane
D)   the diffusion of a solute across a selectively permeable membraneE) B) and D)
F) C) and D)

Question 8

A cell that neither gains nor loses a net amount of water at equilibrium when it is immersed in a solution is ________.

Accepted Answer

A)   isotonic to its environment
B)   hypertonic to its environment
C)   hypotonic to its environment
D)   metabolically inactiveE) None of the above
F) A) and D)

Question 9

Which component of the following reaction is the enzyme? sucrose + sucrase + water → sucrase + glucose + fructose

Accepted Answer

A)   sucrose
B)   sucrase
C)   glucose
D)   fructoseE) C) and D)
F) B) and C)

Question 10

You are riding on your bike and stop pedaling,coasting along the road.Eventually,your bike slows down and stops.What happened to the energy of your motion when your bike stopped?

Accepted Answer

A)   It was returned to the bicycle.
B)   It was converted back to chemical energy.
C)   It was released as heat.
D)   It was used to chemically break down the tires.E) A) and B)
F) A) and C)

Question 11

Which one of the following is most similar to the mechanism of an enzyme inhibitor?

Accepted Answer

A)   keeping someone from parking by parking in their designated spot
B)   driving the wrong way on a one-way street
C)   forgetting to put a cap back on a pen
D)   changing the tires on a carE) B) and D)
F) A) and B)

Question 12

Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach.Which of the following processes could be responsible for its secretion?

Accepted Answer

A)   endocytosis
B)   exocytosis
C)   phagocytosis
D)   passive transportE) B) and C)
F) A) and B)

Question 13

An object at rest has no ________ energy,but it may have ________ energy resulting from its location or structure.

Accepted Answer

A)   kinetic... potential
B)   kinetic... conserved
C)   potential... kinetic
D)   stored... potentialE) A) and B)
F) A) and C)

Question 14

The figure below shows that ________.

Accepted Answer

A)   ADP can perform cellular work when it binds to an additional phosphate group
B)   ATP can perform cellular work when it releases a phosphate group
C)   ATP can be converted to ADP by adding a phosphate group
D)   energy is released from ATP during the process of cellular respirationE) None of the above
F) A) and B)

Question 15

Active transport ________.

Accepted Answer

A)   uses ATP as an energy source
B)   can move solutes against their concentration gradient
C)   can involve the transport of ions
D)   all of the answer optionsE) A) and D)
F) A) and C)

Question 16

Ten kilocalories are equivalent to ________ calories.

Accepted Answer

A)   1,000
B)   10,000
C)   0.1
D)   100E) B) and C)
F) A) and B)

Question 17

Anything that prevents ATP formation will most likely ________.

Accepted Answer

A)   result in cell death
B)   force the cell to rely on lipids for energy
C)   force the cell to rely on ADP for energy
D)   have no effect on the cellE) A) and C)
F) B) and C)

Question 18

The sum total of all the chemical reactions that occur in organisms is called ________.

Accepted Answer

A)   hydrolysis
B)   cellular synthesis
C)   conservation of energy
D)   metabolismE) C) and D)
F) B) and D)

Question 19

Read the following scenario to answer the following question(s) .
Cellular respiration converts the energy of fuel molecules to a form of energy that a cell can use to perform work. In an average day, most adult humans need to consume about 2,000 Calories to maintain their health. However, the exact amount of dietary Calories a person needs depends upon many factors, including the person's age, physical activity, size, and health. Foods that we consume vary greatly in their nutritional content and quality. A large hard-boiled egg, for example, has about 75 dietary Calories and contains about 70% of our recommended daily intake of cholesterol.
-If a person eats one hard-boiled egg and digests the egg fully,cellular respiration will convert most of this energy into ________.

Accepted Answer

A)   ATP
B)   heat
C)   carbon dioxide
D)   sugarsE) A) and D)
F) All of the above

Question 20

The principle that energy cannot be created or destroyed is known as ________.

Accepted Answer

A)   cellular respiration
B)   conservation of energy
C)   conservation of heat
D)   entropyE) A) and B)
F) All of the above

Exam 5: The Working Cell

The principle that energy cannot be created or destroyed is known as ________.

Correct Answer
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Anything that prevents ATP formation will most likely ________.

Correct Answer
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Glucose molecules provide energy to power the swimming motion of sperm.In this example,the sperm are changing ________.

Correct Answer
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Osmosis can be defined as ________.

Correct Answer
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Active transport ________.

Correct Answer
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Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach.Which of the following processes could be responsible for its secretion?

Correct Answer
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Which one of the following is TRUE?

Correct Answer
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An object at rest has no energy,but it may have energy resulting from its location or structure.

Correct Answer
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Which component of the following reaction is the enzyme? sucrose + sucrase + water → sucrase + glucose + fructose

Correct Answer
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The sum total of all the chemical reactions that occur in organisms is called ________.

Correct Answer
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A cell that neither gains nor loses a net amount of water at equilibrium when it is immersed in a solution is ________.

Correct Answer
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Correct Answer
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The figure below shows that ________.

Correct Answer
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In a hypotonic solution,a plant cell will ________.

Correct Answer
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You are riding on your bike and stop pedaling,coasting along the road.Eventually,your bike slows down and stops.What happened to the energy of your motion when your bike stopped?

Correct Answer
verified

Ten kilocalories are equivalent to ________ calories.

Correct Answer
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Correct Answer
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Which one of the following is most similar to the mechanism of an enzyme inhibitor?

Correct Answer
verified

Facilitated diffusion across a biological membrane requires and moves a substance its concentration gradient.

Correct Answer
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Diffusion ________.

Correct Answer
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Exam 5: The Working Cell

The principle that energy cannot be created or destroyed is known as ________.

Correct AnswerverifiedShow Answer

Anything that prevents ATP formation will most likely ________.

Correct AnswerverifiedShow Answer

Glucose molecules provide energy to power the swimming motion of sperm.In this example,the sperm are changing ________.

Correct AnswerverifiedShow Answer

Osmosis can be defined as ________.

Correct AnswerverifiedShow Answer

Active transport ________.

Correct AnswerverifiedShow Answer

Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach.Which of the following processes could be responsible for its secretion?

Correct AnswerverifiedShow Answer

Which one of the following is TRUE?

Correct AnswerverifiedShow Answer

An object at rest has no ________ energy,but it may have ________ energy resulting from its location or structure.

Correct AnswerverifiedShow Answer

Which component of the following reaction is the enzyme? sucrose + sucrase + water → sucrase + glucose + fructose

Correct AnswerverifiedShow Answer

The sum total of all the chemical reactions that occur in organisms is called ________.

Correct AnswerverifiedShow Answer

A cell that neither gains nor loses a net amount of water at equilibrium when it is immersed in a solution is ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The figure below shows that ________.

Correct AnswerverifiedShow Answer

In a hypotonic solution,a plant cell will ________.

Correct AnswerverifiedShow Answer

You are riding on your bike and stop pedaling,coasting along the road.Eventually,your bike slows down and stops.What happened to the energy of your motion when your bike stopped?

Correct AnswerverifiedShow Answer

Ten kilocalories are equivalent to ________ calories.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which one of the following is most similar to the mechanism of an enzyme inhibitor?

Correct AnswerverifiedShow Answer

Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.

Correct AnswerverifiedShow Answer

Diffusion ________.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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An object at rest has no energy,but it may have energy resulting from its location or structure.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Facilitated diffusion across a biological membrane requires and moves a substance its concentration gradient.

Correct Answer
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Correct Answer
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