Question 1

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. 
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.

Question 2

Which energy association is correct?

Accepted Answer

A)  Kinetic energy is energy of motion. 
B)  Water stored behind a dam is an example of kinetic energy. 
C)  Energy in the chemical bonds of a molecule is kinetic energy. 
D)  Potential energy must be used immediately or it is lost. 
E)  Light energy is a form of chemical energy. 
A)  Kinetic energy is energy of motion. 
B)  Water stored behind a dam is an example of kinetic energy. 
C)  Energy in the chemical bonds of a molecule is kinetic energy. 
D)  Potential energy must be used immediately or it is lost. 
E)  Light energy is a form of chemical energy.

Question 3

Metabolic pathways are known for all of the following EXCEPT

Accepted Answer

A)  the use of energy in small amounts. 
B)  linking between pathways. 
C)  controlled formation of products. 
D)  feedback inhibition. 
E)  enzymes to help raise the energy of activation. 
A)  the use of energy in small amounts. 
B)  linking between pathways. 
C)  controlled formation of products. 
D)  feedback inhibition. 
E)  enzymes to help raise the energy of activation.

Question 4

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)  charge. 
A)  concentration. 
B)  size. 
C)  color. 
D)  time. 
E)  charge.

Question 5

The part of the enzyme into which the substrate fits is called the

Accepted Answer

A)  feedback site. 
B)  active site. 
C)  substrate location. 
D)  inhibitor. 
E)  solute. 
A)  feedback site. 
B)  active site. 
C)  substrate location. 
D)  inhibitor. 
E)  solute.

Question 6

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 surface. 
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 surface.

Question 7

Enzymes,coenzymes,and cofactors provide a mechanism for a cell to regulate the metabolism of a large amount of cell products using small quantities of chemicals.

Accepted Answer

A) True 
 B)False

Question 8

In what function do the embedded membrane proteins at "c" serve?   2-2013

Accepted Answer

A)  simple diffusion 
B)  facilitated and active transport 
C)  support for the membrane 
D)  phagocytosis 
E)  osmosis 
A)  simple diffusion 
B)  facilitated and active transport 
C)  support for the membrane 
D)  phagocytosis 
E)  osmosis

Question 9

The second law of thermodynamics states that all energy transformations result in more disordered energy.How does this relate to energy transformation in a living organism?

Accepted Answer

A)  the energy taken in as food is eventually converted into kinetic energy 
B)  the energy taken in as food is eventually converted into heat energy 
C)  the energy taken in as kinetic energy is eventually converted into heat energy 
D)  the energy taken in as heat energy is eventually converted into kinetic energy 
E)  no energy in a living organism can undergo more than one transformation 
A)  the energy taken in as food is eventually converted into kinetic energy 
B)  the energy taken in as food is eventually converted into heat energy 
C)  the energy taken in as kinetic energy is eventually converted into heat energy 
D)  the energy taken in as heat energy is eventually converted into kinetic energy 
E)  no energy in a living organism can undergo more than one transformation

Question 10

Which of the areas shown in the figure below indicates the presence of an enzyme in the movement of reactant over to product?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  Both a & d 
A)  a 
B)  b 
C)  c 
D)  d 
E)  Both a & d

Question 11

Which of the following statements most accurately describes the first law of thermodynamics?

Accepted Answer

A)  energy can be neither created nor destroyed but it can be changed from one form to another. 
B)  one usable form of energy cannot be completely converted into another usable form. 
C)  one usable form of energy can be completely converted into another usable form. 
D)  energy cannot be created or destroyed. 
E)  energy cannot be transformed. 
A)  energy can be neither created nor destroyed but it can be changed from one form to another. 
B)  one usable form of energy cannot be completely converted into another usable form. 
C)  one usable form of energy can be completely converted into another usable form. 
D)  energy cannot be created or destroyed. 
E)  energy cannot be transformed.

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. 
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.

Question 13

Where within the cell is ATP built up?

Accepted Answer

A)  mitochondria 
B)  cytoplasm 
C)  nucleus 
D)  endoplasmic reticulum 
E)  Golgi body 
A)  mitochondria 
B)  cytoplasm 
C)  nucleus 
D)  endoplasmic reticulum 
E)  Golgi body

Question 14

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)  phagocytosis. 
A)  simple diffusion. 
B)  facilitated diffusion. 
C)  pinocytosis. 
D)  active transport. 
E)  phagocytosis.

Question 15

If blood cells are placed in a hypertonic solution

Accepted Answer

A)  the cells will shrink due to water loss by the cell. 
B)  the cells will be unaffected since they have a cell membrane to separate them from the solution. 
C)  the cells will swell due to diffusion. 
D)  the cells will burst due to active transport. 
E)  the cells will shrink due to the loss of solutes from the blood cell. 
A)  the cells will shrink due to water loss by the cell. 
B)  the cells will be unaffected since they have a cell membrane to separate them from the solution. 
C)  the cells will swell due to diffusion. 
D)  the cells will burst due to active transport. 
E)  the cells will shrink due to the loss of solutes from the blood cell.

Question 16

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)  osmosis 
A)  active transport 
B)  diffusion 
C)  exocytosis 
D)  pinocytosis 
E)  osmosis

Question 17

Less energy is needed to bring about a reaction when an enzyme is present.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

A)  hypotonic 
B)  isotonic 
C)  hypertonic 
D)  diffuse 
E)  ionic 
A)  hypotonic 
B)  isotonic 
C)  hypertonic 
D)  diffuse 
E)  ionic

Question 19

Osmosis includes

Accepted Answer

A)  a semi-permeable membrane. 
B)  transport proteins. 
C)  the diffusion of water. 
D)  both the diffusion of water and a semi-permeable membrane. 
E)  both a semi-permeable membrane and transport proteins. 
A)  a semi-permeable membrane. 
B)  transport proteins. 
C)  the diffusion of water. 
D)  both the diffusion of water and a semi-permeable membrane. 
E)  both a semi-permeable membrane and transport proteins.

Question 20

The opposite of a turgid plant cell is a

Accepted Answer

A)  hypertonic plant cell. 
B)  osmotic plant cell. 
C)  isotonic plant cell. 
D)  plasmolyzed plant cell. 
E)  ruptured plant cell. 
A)  hypertonic plant cell. 
B)  osmotic plant cell. 
C)  isotonic plant cell. 
D)  plasmolyzed plant cell. 
E)  ruptured plant cell.

Exam 5: The Dynamic Cell

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

Which energy association is correct?

Metabolic pathways are known for all of the following EXCEPT

Probable factors that affect the passage of materials across cell membranes include all of the following EXCEPT

The part of the enzyme into which the substrate fits is called the

Energy of activation

Enzymes,coenzymes,and cofactors provide a mechanism for a cell to regulate the metabolism of a large amount of cell products using small quantities of chemicals.

In what function do the embedded membrane proteins at "c" serve? 2-2013

The second law of thermodynamics states that all energy transformations result in more disordered energy.How does this relate to energy transformation in a living organism?

Which of the areas shown in the figure below indicates the presence of an enzyme in the movement of reactant over to product?

Which of the following statements most accurately describes the first law of thermodynamics?

Where within the cell is ATP built up?

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

If blood cells are placed in a hypertonic solution

Less energy is needed to bring about a reaction when an enzyme is present.

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

Osmosis includes

The opposite of a turgid plant cell is a

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

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