Question 1

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. 
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.

Question 2

Which of the following is a byproduct of photosynthesis that is used during cellular respiration?

Accepted Answer

A)  oxygen 
B)  NADH 
C)  carbon dioxide 
D)  ATP 
E)  FADH2 
A)  oxygen 
B)  NADH 
C)  carbon dioxide 
D)  ATP 
E)  FADH2

Question 3

Simple diffusion of molecules occurs

Accepted Answer

A)  from an area of lesser concentration to an area of greater concentration. 
B)  in non-living systems as well as living systems. 
C)  across plasma membranes only through transport proteins. 
D)  until those molecules are more highly concentrated on one side of the plasma membrane. 
E)  only in molecules that are in gaseous state. 
A)  from an area of lesser concentration to an area of greater concentration. 
B)  in non-living systems as well as living systems. 
C)  across plasma membranes only through transport proteins. 
D)  until those molecules are more highly concentrated on one side of the plasma membrane. 
E)  only in molecules that are in gaseous state.

Question 4

What prevents a plant cell from bursting in a hypotonic solution?

Accepted Answer

A)  plasma membrane 
B)  transport proteins which help pump the excess water out of the cell 
C)  cell wall 
D)  a plant cell will not burst in a hypotonic solution because water is moving out of the cell 
E)  the presence of chloroplasts 
A)  plasma membrane 
B)  transport proteins which help pump the excess water out of the cell 
C)  cell wall 
D)  a plant cell will not burst in a hypotonic solution because water is moving out of the cell 
E)  the presence of chloroplasts

Question 5

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. 
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.

Question 6

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 light 
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 light

Question 7

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 first 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. 
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.

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:

Which of the following is a byproduct of photosynthesis that is used during cellular respiration?

Simple diffusion of molecules occurs

What prevents a plant cell from bursting in a hypotonic solution?

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

Which is an example of potential rather than kinetic energy?

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 first law of thermodynamics?

Biology: The Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Patterns of Inheritance

DNA Biology

Biotechnology and Genomics

Genetic Counseling

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

The Microorganisms: Viruses, bacteria, and Protists

Land Environment: Plants and Fungi

Both Water and Land: Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters

Exam 5: The Dynamic Cell

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:

Which of the following is a byproduct of photosynthesis that is used during cellular respiration?

Simple diffusion of molecules occurs

What prevents a plant cell from bursting in a hypotonic solution?

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

Which is an example of potential rather than kinetic energy?

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 first law of thermodynamics?

Biology: The Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Patterns of Inheritance

DNA Biology

Biotechnology and Genomics

Genetic Counseling

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

The Microorganisms: Viruses, bacteria, and Protists

Land Environment: Plants and Fungi

Both Water and Land: Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters