Question 1

A metabolic reaction will most likely reverse itself when the ____.

Accepted Answer

A)  pH is too high 
B)  temperature is too low 
C)  reactant concentration is too high 
D)  product concentration is too high 
E)  enzyme concentration is too high 
A)  pH is too high 
B)  temperature is too low 
C)  reactant concentration is too high 
D)  product concentration is too high 
E)  enzyme concentration is too high

Question 2

To engulf a bacterium, a white blood cell would use ____.

Accepted Answer

A)  facilitated diffusion 
B)  osmosis 
C)  phagocytosis 
D)  exocytosis 
E)  sodium-potassium pumps 
A)  facilitated diffusion 
B)  osmosis 
C)  phagocytosis 
D)  exocytosis 
E)  sodium-potassium pumps

Question 3

Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions. Calcium ion concentrations are ____ inside the cell than/as they are outside the cell.

Accepted Answer

A)  slightly higher 
B)  slightly lower 
C)  the same 
D)  much higher 
E)  much lower 
A)  slightly higher 
B)  slightly lower 
C)  the same 
D)  much higher 
E)  much lower

Question 4

Answer the questions by matching each word or groups of words with its appropriate question number.
-part of the enzyme that is specific for the reaction it will catalyze
A)active site
B)adenosine triphosphate
C)electron transfer chain
D)denaturation
E)feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor

Accepted Answer

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

Question 5

​Osmosis involves the movement of ____ across a semi-permeable membrane from an area of ____.

Accepted Answer

A)  ​solutes; high solute concentration to an area of low solute concentration 
B)  ​water; high solute concentration to an area of low solute concentration 
C)  ​solvents; high solute concentration to an area of low solute concentration 
D)  ​solutes; low solute concentration to an area of high solute concentration 
E)  ​water; low solute concentration to an area of high solute concentration 
A)  ​solutes; high solute concentration to an area of low solute concentration 
B)  ​water; high solute concentration to an area of low solute concentration 
C)  ​solvents; high solute concentration to an area of low solute concentration 
D)  ​solutes; low solute concentration to an area of high solute concentration 
E)  ​water; low solute concentration to an area of high solute concentration

Question 6

​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 transfers energy to enzymes and other molecules. 
C)  ​Electron movement generates energy during each step. 
D)  ​Energy from the electrons is stored for future use in pigments. 
E)  ​The energy from the electron movement is used to break down ATP. 
A)  ​Electrons move from a low energy level to a higher energy level. 
B)  ​Electron movement transfers energy to enzymes and other molecules. 
C)  ​Electron movement generates energy during each step. 
D)  ​Energy from the electrons is stored for future use in pigments. 
E)  ​The energy from the electron movement is used to break down ATP.

Question 7

Heating up a reaction increases the speed of a reaction until the ____.

Accepted Answer

A)  enzyme denatures 
B)  heat changes the pH of the reaction 
C)  maximum speed is achieved 
D)  cofactors can't bind the enzyme 
E)  reaction begins to experience feedback inhibition 
A)  enzyme denatures 
B)  heat changes the pH of the reaction 
C)  maximum speed is achieved 
D)  cofactors can't bind the enzyme 
E)  reaction begins to experience feedback inhibition

Question 8

What is the most likely source of various hangover symptoms?

Accepted Answer

A)  acetate 
B)  acetaldehyde 
C)  ethanol 
D)  alcohol dehydrogenase 
E)  ALDH 
A)  acetate 
B)  acetaldehyde 
C)  ethanol 
D)  alcohol dehydrogenase 
E)  ALDH

Question 9

Red blood cells contain 2 percent salt. What will happen when the cell is placed in a 10 percent salt solution?

Accepted Answer

A)  The cell will burst. 
B)  The cell will shrink. 
C)  The cell will remain unchanged, but salt will diffuse out of the cell. 
D)  The cell will remain unchanged, but salt will diffuse into the cell. 
E)  The cell will remain unchanged, but water will diffuse out of the cell. 
A)  The cell will burst. 
B)  The cell will shrink. 
C)  The cell will remain unchanged, but salt will diffuse out of the cell. 
D)  The cell will remain unchanged, but salt will diffuse into the cell. 
E)  The cell will remain unchanged, but water will diffuse out of the cell.

Question 10

Long term, heavy drinking can lead to ____, a disease characterized by inflammation and destruction of the liver.

Accepted Answer

A)  hepatoblastoma 
B)  gall stones 
C)  fatty liver disease 
D)  jaundice 
E)  cirrhosis 
A)  hepatoblastoma 
B)  gall stones 
C)  fatty liver disease 
D)  jaundice 
E)  cirrhosis

Question 11

​In a chemical reaction, if the reactants have more energy than the products, ____.

Accepted Answer

A)  ​there will be a net release of energy 
B)  ​there will be a net loss of energy 
C)  ​the activation energy will be very high 
D)  ​the activation energy will be very low 
E)  ​more bonds were made than were broken 
A)  ​there will be a net release of energy 
B)  ​there will be a net loss of energy 
C)  ​the activation energy will be very high 
D)  ​the activation energy will be very low 
E)  ​more bonds were made than were broken

Question 12

​What reaction does the enzyme alcohol dehydrogenase catalyze?

Accepted Answer

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

Question 13

​Cells store energy in the form of ____.

Accepted Answer

A)  ​sunlight 
B)  ​chloroplasts 
C)  ​carbon dioxide 
D)  ​glucose 
E)  ​water 
A)  ​sunlight 
B)  ​chloroplasts 
C)  ​carbon dioxide 
D)  ​glucose 
E)  ​water

Question 14

​Wilting of a plant occurs ____.

Accepted Answer

A)  ​if the plant is placed in an isotonic solution 
B)  ​if there is a rise in turgor pressure 
C)  ​as a result of facilitated diffusion 
D)  ​if the plant is placed in a hypertonic solution 
E)  ​if the plant is placed in a hypotonic solution 
A)  ​if the plant is placed in an isotonic solution 
B)  ​if there is a rise in turgor pressure 
C)  ​as a result of facilitated diffusion 
D)  ​if the plant is placed in a hypertonic solution 
E)  ​if the plant is placed in a hypotonic solution

Question 15

The fact that the earth does not go up in flames in spite of the richness of oxygen in our environment is related to which of the following concepts?

Accepted Answer

A)  the activation energy needed to break bonds 
B)  the fact that reactants always have less energy than products 
C)  the first law of thermodynamics 
D)  the second law of thermodynamics 
E)  the abundance of water in our atmosphere, which inhibits combustion 
A)  the activation energy needed to break bonds 
B)  the fact that reactants always have less energy than products 
C)  the first law of thermodynamics 
D)  the second law of thermodynamics 
E)  the abundance of water in our atmosphere, which inhibits combustion

Question 16

​Answer the questions by matching each word or groups of words with the appropriate definition.
-​the main energy carrier between reaction sites in cells
A)​reactant
B)​product
C)​ATP
D)​activation energy
E)​reaction
F)​phosphorylation

Accepted Answer

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

Question 17

Answer the questions by matching each word or groups of words with its appropriate question number.
-loss of protein structure by excessive pH, temperature and other factors
A)active site
B)adenosine triphosphate
C)electron transfer chain
D)denaturation
E)feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor

Accepted Answer

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

Question 18

Consider the ADH reaction and answer the following question. ADH stands for alcohol dehydrogenase.   ​ In this reaction, acetaldehyde represents the ____.

Accepted Answer

A)  enzyme 
B)  reactant 
C)  product 
D)  activation energy 
E)  trigger 
A)  enzyme 
B)  reactant 
C)  product 
D)  activation energy 
E)  trigger

Question 19

​Active transport pumps typically move solutes from areas of ____ concentration to areas of ____ concentration.

Accepted Answer

A)  ​high; low 
B)  ​low; high 
C)  ​neutral; high 
D)  ​neutral; low 
E)  ​low; neutral 
A)  ​high; low 
B)  ​low; high 
C)  ​neutral; high 
D)  ​neutral; low 
E)  ​low; neutral

Question 20

​The second law of thermodynamics states that ____.

Accepted Answer

A)  ​the energy of the universe is a constant 
B)  ​energy can be neither created nor destroyed 
C)  ​energy disperses spontaneously 
D)  ​energy transformations create a more orderly universe 
E)  ​energy and matter are the same thing 
A)  ​the energy of the universe is a constant 
B)  ​energy can be neither created nor destroyed 
C)  ​energy disperses spontaneously 
D)  ​energy transformations create a more orderly universe 
E)  ​energy and matter are the same thing

Exam 4: Energy and Metabolism

A metabolic reaction will most likely reverse itself when the ____.

To engulf a bacterium, a white blood cell would use ____.

Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions. Calcium ion concentrations are ____ inside the cell than/as they are outside the cell.

​Osmosis involves the movement of ____ across a semi-permeable membrane from an area of ____.

​What happens in an electron transport chain?

Heating up a reaction increases the speed of a reaction until the ____.

What is the most likely source of various hangover symptoms?

Red blood cells contain 2 percent salt. What will happen when the cell is placed in a 10 percent salt solution?

Long term, heavy drinking can lead to ____, a disease characterized by inflammation and destruction of the liver.

​In a chemical reaction, if the reactants have more energy than the products, ____.

​What reaction does the enzyme alcohol dehydrogenase catalyze?

​Cells store energy in the form of ____.

​Wilting of a plant occurs ____.

The fact that the earth does not go up in flames in spite of the richness of oxygen in our environment is related to which of the following concepts?

​Answer the questions by matching each word or groups of words with the appropriate definition. -​the main energy carrier between reaction sites in cells A)​reactant B)​product C)​ATP D)​activation energy E)​reaction F)​phosphorylation

Consider the ADH reaction and answer the following question. ADH stands for alcohol dehydrogenase. ​ In this reaction, acetaldehyde represents the ____.

​Active transport pumps typically move solutes from areas of ____ concentration to areas of ____ concentration.

​The second law of thermodynamics states that ____.

Invitation to Biology

Molecules of Life

Cell Structure

Photosynthesis

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and 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

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

Osmosis involves the movement of across a semi-permeable membrane from an area of .

What happens in an electron transport chain?

In a chemical reaction, if the reactants have more energy than the products, ____.

What reaction does the enzyme alcohol dehydrogenase catalyze?

Cells store energy in the form of ____.

Wilting of a plant occurs ____.

Answer the questions by matching each word or groups of words with the appropriate definition. -the main energy carrier between reaction sites in cells A)reactant B)product C)ATP D)activation energy E)reaction F)phosphorylation

Consider the ADH reaction and answer the following question. ADH stands for alcohol dehydrogenase. In this reaction, acetaldehyde represents the ____.

Active transport pumps typically move solutes from areas of concentration to areas of concentration.

The second law of thermodynamics states that ____.