Question 1

Which of the following statements is CORRECT?

Accepted Answer

A)  A solvent will diffuse from a hypotonic solution to a hypertonic solution. 
B)  A solvent will diffuse from a hypertonic solution to a hypotonic solution. 
C)  The concentration of the solute is greater in a hypotonic solution than in a hypertonic solution. 
D)  A solvent will experience net flow between two isotonic solutions. 
E)  Osmosis only occurs when both solutions separated by a membrane are hypertonic. 
A)  A solvent will diffuse from a hypotonic solution to a hypertonic solution. 
B)  A solvent will diffuse from a hypertonic solution to a hypotonic solution. 
C)  The concentration of the solute is greater in a hypotonic solution than in a hypertonic solution. 
D)  A solvent will experience net flow between two isotonic solutions. 
E)  Osmosis only occurs when both solutions separated by a membrane are hypertonic.

Question 2

Pepsin is an enzyme that functions in the stomach.Its optimum pH would be

Accepted Answer

A)  between 1 and 2. 
B)  between 3 and 4. 
C)  above 6. 
D)  between 5 and 7.5. 
E)  above 8.5. 
A)  between 1 and 2. 
B)  between 3 and 4. 
C)  above 6. 
D)  between 5 and 7.5. 
E)  above 8.5.

Question 3

ADH Reaction
Consider the reaction below,and answer the following question(s).ADH stands for alcohol dehydrogenase.
  
-In this reaction,ADH represents the

Accepted Answer

A)  enzyme. 
B)  substrate. 
C)  product. 
D)  activation energy. 
E)  trigger. 
A)  enzyme. 
B)  substrate. 
C)  product. 
D)  activation energy. 
E)  trigger.

Question 4

Answer the questions by matching each word or groups of words with its appropriate question number.
 a.active site
b.adenosine triphosphate 
c.electron transfer chain
d.denaturation
e.feedback inhibition
f.phosphorylation
g.enzyme
h.cofactor
-proteins and molecules that generate the energy for the phosphorylation of ADP to ATP

Accepted Answer

The answer of Answer the questions by matching each word...

Question 5

Match the following correctly.
a.simple diffusion
b.exocytosis
c.osmosis
d.active transport
e.phagocytosis
-This process specifically moves water molecules across a differential permeable membrane.

Accepted Answer

The answer of Match the following correctly.
a.simple diffusion
b.exocytosis
c.osmosis
d.active transport
e.phagocytosis
-This process...

Question 6

Answer the questions by matching each word or groups of words with its appropriate question number.
 a.active site
b.adenosine triphosphate 
c.electron transfer chain
d.denaturation
e.feedback inhibition
f.phosphorylation
g.enzyme
h.cofactor
-attaching a phosphate group by forming a higher energy bond

Accepted Answer

The answer of Answer the questions by matching each word...

Question 7

What is the most likely source of various hangover symptoms?

Accepted Answer

A)  acetate 
B)  acetaldehyde 
C)  ethanol 
D)  alcohol dehydrogenase 
E)  carbon dioxide 
A)  acetate 
B)  acetaldehyde 
C)  ethanol 
D)  alcohol dehydrogenase 
E)  carbon dioxide

Question 8

Which of the following occurs in the feedback inhibition?

Accepted Answer

A)  Coenzymes block enzyme activity. 
B)  Products of metabolic reactions block enzyme activity. 
C)  NADH is altered in electron transport chains. 
D)  ADP is phosphorylated. 
E)  More than one of these occurs in feedback inhibition. 
A)  Coenzymes block enzyme activity. 
B)  Products of metabolic reactions block enzyme activity. 
C)  NADH is altered in electron transport chains. 
D)  ADP is phosphorylated. 
E)  More than one of these occurs in feedback inhibition.

Question 9

Transporting a solute against its concentration gradient requires

Accepted Answer

A)  energy. 
B)  a gated channel. 
C)  exocytosis. 
D)  hypotonic and hypertonic differences across the cell membrane. 
E)  more than one of these. 
A)  energy. 
B)  a gated channel. 
C)  exocytosis. 
D)  hypotonic and hypertonic differences across the cell membrane. 
E)  more than one of these.

Question 10

The enzyme that breaks down ethanol is alcohol

Accepted Answer

A)  dehydrogenase. 
B)  oxidase. 
C)  peroxidase. 
D)  catalase. 
E)  protease. 
A)  dehydrogenase. 
B)  oxidase. 
C)  peroxidase. 
D)  catalase. 
E)  protease.

Question 11

Which of the human organs is responsible for breaking down ethanol and other toxins?

Accepted Answer

A)  stomach 
B)  liver 
C)  small intestine 
D)  pancreas 
E)  spleen 
A)  stomach 
B)  liver 
C)  small intestine 
D)  pancreas 
E)  spleen

Question 12

Examine the figure above and answer the following question(s).
-In the figure above,the amount of energy symbolized by the line "A" would be the

Accepted Answer

A)  reactant energy. 
B)  product energy. 
C)  cofactor energy. 
D)  activation energy. 
E)  intermediate energy. 
A)  reactant energy. 
B)  product energy. 
C)  cofactor energy. 
D)  activation energy. 
E)  intermediate energy.

Question 13

Which of the following is a risk factor associated with heavy consumption of alcohol?

Accepted Answer

A)  weight gain 
B)  alcoholic hepatitis 
C)  cirrhosis 
D)  liver failure 
E)  all of these are risk factors associated with heavy consumption of alcohol 
A)  weight gain 
B)  alcoholic hepatitis 
C)  cirrhosis 
D)  liver failure 
E)  all of these are risk factors associated with heavy consumption of alcohol

Question 14

A solute passively diffuses through a transport protein out of the cell.What is the tonicity of the fluid inside the cell?

Accepted Answer

A)  hypertonic 
B)  hypotonic 
C)  isotonic 
D)  none of these 
E)  more than one of these 
A)  hypertonic 
B)  hypotonic 
C)  isotonic 
D)  none of these 
E)  more than one of these

Question 15

At what pH does pepsin denature?

Accepted Answer

A)  above 2.5 
B)  above 3.5 
C)  above 4.5 
D)  above 5.5 
E)  below 2.5 
A)  above 2.5 
B)  above 3.5 
C)  above 4.5 
D)  above 5.5 
E)  below 2.5

Question 16

Answer the questions by matching each word or groups of words with the appropriate definition.
a.reactant
b.product
c.ATP
d.activation energy
e.reaction
f.phosphorylation
-molecule remaining at the end of a reaction

Accepted Answer

The answer of Answer the questions by matching each word...

Question 17

What happens in an electron transport chain?

Accepted Answer

A)  Electrons move from a low energy level to a higher energy level. 
B)  Electron movement generates energy which can be harvested. 
C)  Electrons combine with hydrogen ions to generate electron carriers, like NADH. 
D)  Energy is consumed. 
E)  The energy generated is used to break down coenzymes like NADH and ATP. 
A)  Electrons move from a low energy level to a higher energy level. 
B)  Electron movement generates energy which can be harvested. 
C)  Electrons combine with hydrogen ions to generate electron carriers, like NADH. 
D)  Energy is consumed. 
E)  The energy generated is used to break down coenzymes like NADH and ATP.

Question 18

The net direction that an ion or molecule moves is

Accepted Answer

A)  dependent upon the size of the molecule. 
B)  unpredictable because the movement is random. 
C)  the result of concentration differences. 
D)  controlled by the temperature of the medium. 
E)  controlled by the membranes in the vicinity. 
A)  dependent upon the size of the molecule. 
B)  unpredictable because the movement is random. 
C)  the result of concentration differences. 
D)  controlled by the temperature of the medium. 
E)  controlled by the membranes in the vicinity.

Question 19

What reaction does the enzyme ALDH catalyze?

Accepted Answer

A)  ethanol to acetaldehyde 
B)  acetaldehyde to acetate 
C)  acetate to acetaldehyde 
D)  acetaldehyde to ethanol 
E)  ethanol to acetate 
A)  ethanol to acetaldehyde 
B)  acetaldehyde to acetate 
C)  acetate to acetaldehyde 
D)  acetaldehyde to ethanol 
E)  ethanol to acetate

Question 20

Which of the following statements is FALSE about energy in molecules?

Accepted Answer

A)  Chemical bonds in molecules contain energy. 
B)  Reactants always have less energy than products. 
C)  Some molecules contain more energy than others. 
D)  Molecules release energy when they react with oxygen. 
E)  When broken, chemical bonds release energy. 
A)  Chemical bonds in molecules contain energy. 
B)  Reactants always have less energy than products. 
C)  Some molecules contain more energy than others. 
D)  Molecules release energy when they react with oxygen. 
E)  When broken, chemical bonds release energy.

Exam 4: Energy and Metabolism

Which of the following statements is CORRECT?

Pepsin is an enzyme that functions in the stomach.Its optimum pH would be

ADH Reaction Consider the reaction below,and answer the following question(s).ADH stands for alcohol dehydrogenase. -In this reaction,ADH represents the

Match the following correctly. a.simple diffusion b.exocytosis c.osmosis d.active transport e.phagocytosis -This process specifically moves water molecules across a differential permeable membrane.

What is the most likely source of various hangover symptoms?

Which of the following occurs in the feedback inhibition?

Transporting a solute against its concentration gradient requires

The enzyme that breaks down ethanol is alcohol

Which of the human organs is responsible for breaking down ethanol and other toxins?

Examine the figure above and answer the following question(s). -In the figure above,the amount of energy symbolized by the line "A" would be the

Which of the following is a risk factor associated with heavy consumption of alcohol?

A solute passively diffuses through a transport protein out of the cell.What is the tonicity of the fluid inside the cell?

At what pH does pepsin denature?

Answer the questions by matching each word or groups of words with the appropriate definition. a.reactant b.product c.ATP d.activation energy e.reaction f.phosphorylation -molecule remaining at the end of a reaction

What happens in an electron transport chain?

The net direction that an ion or molecule moves is

What reaction does the enzyme ALDH catalyze?

Which of the following statements is FALSE about energy in molecules?

Invitation to Biology

Molecules of Life

Cell Structure

Capturing and Releasing Energy

DNA Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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