Question 1

When solute molecules pass through the membrane using a carrier protein,without any energy input,it is referred to as

Accepted Answer

A) active transport. 
B) simple diffusion. 
C) osmosis. 
D) facilitated diffusion. 
E) solute diffusion. 
A) active transport. 
B) simple diffusion. 
C) osmosis. 
D) facilitated diffusion. 
E) solute diffusion. D

Question 2

If a membrane only allows certain types of substances to go through,then the membrane is said to be what kind?

Accepted Answer

A) facilitated diffusing 
B) active transporter 
C) differentially permeable 
D) permanently permeable 
E) gradiently soluble 
A) facilitated diffusing 
B) active transporter 
C) differentially permeable 
D) permanently permeable 
E) gradiently soluble C

Question 3

What process uses energy to move a substance from an area of low concentration to an area of high concentration?

Accepted Answer

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

Question 4

Why is ATP used as the energy currency in cells?

Accepted Answer

A) ATP is a protein. 
B) ATP contains energy stored in the phosphate bonds. 
C) ATP carries a positive charge. 
D) ATP is made directly from glucose. 
E) ATP is made from lipids. 
A) ATP is a protein. 
B) ATP contains energy stored in the phosphate bonds. 
C) ATP carries a positive charge. 
D) ATP is made directly from glucose. 
E) ATP is made from lipids.

Question 5

Which of these would be a novel function for a cell membrane protein?

Accepted Answer

A) assemble polymers from amino acid monomers 
B) transfer molecules from cytoplasm to outside of cell 
C) help recognize foreign invaders 
D) bind specific signaling molecules 
E) assist cell-to-cell communication 
A) assemble polymers from amino acid monomers 
B) transfer molecules from cytoplasm to outside of cell 
C) help recognize foreign invaders 
D) bind specific signaling molecules 
E) assist cell-to-cell communication

Question 6

If 0.9% NaCl were isotonic compared to a cell,then

Accepted Answer

A) 1.0% NaCl would be hypertonic to cell. 
B) 0.7% NaCl would be hypertonic to cell. 
C) 0.1% NaCl would be hypertonic to cell. 
D) 1.0% NaCl would be hypotonic to cell. 
E) 1.9% NaCl would be hypotonic to cell. 
A) 1.0% NaCl would be hypertonic to cell. 
B) 0.7% NaCl would be hypertonic to cell. 
C) 0.1% NaCl would be hypertonic to cell. 
D) 1.0% NaCl would be hypotonic to cell. 
E) 1.9% NaCl would be hypotonic to cell.

Question 7

What model proposes that enzymes slightly alter their shape to bind to a substrate?

Accepted Answer

A) The active site model 
B) The substrate model 
C) The enzyme model 
D) The induced fit model 
E) The activation energy model 
A) The active site model 
B) The substrate model 
C) The enzyme model 
D) The induced fit model 
E) The activation energy model

Question 8

This figure shows an enzyme in action.What does "c" represent?

Accepted Answer

A) polypeptide 
B) active site 
C) enzyme-substrate complex 
D) substrate 
E) products 
A) polypeptide 
B) active site 
C) enzyme-substrate complex 
D) substrate 
E) products

Question 9

A claim that a machine that can run forever,therefore producing as much energy as it consumes,violates what?

Accepted Answer

A) First Law of Theormodynamics 
B) Second Law of Thermodynamics 
C) Third Law of Thermodynamics 
D) Law of Endergonic Reactions 
E) Law of Exergonic Reactions 
A) First Law of Theormodynamics 
B) Second Law of Thermodynamics 
C) Third Law of Thermodynamics 
D) Law of Endergonic Reactions 
E) Law of Exergonic Reactions

Question 10

Many enzymes require the presence of _________________ which are nonprotein organic molecules in order to be active and work correctly.

Accepted Answer

A) inducer molecules 
B) active site binders 
C) activation molecules 
D) denaturing molecules 
E) cofactors 
A) inducer molecules 
B) active site binders 
C) activation molecules 
D) denaturing molecules 
E) cofactors

Question 11

ATP is made up of:

Accepted Answer

A) Adenine,ribose,and three phosphates 
B) Adenine,ribose,and one phosphate 
C) Adenine and three phosphate groups 
D) Adenine and one phosphate group 
E) Adenine and two phosphate groups 
A) Adenine,ribose,and three phosphates 
B) Adenine,ribose,and one phosphate 
C) Adenine and three phosphate groups 
D) Adenine and one phosphate group 
E) Adenine and two phosphate groups

Question 12

Which part of an enzyme binds to its substrate?

Accepted Answer

A) substrate site 
B) active site 
C) enzyme site 
D) activation site 
E) reaction site 
A) substrate site 
B) active site 
C) enzyme site 
D) activation site 
E) reaction site

Question 13

Figure:  
-This figure shows an enzyme in action.What does "A" represent?

Accepted Answer

A) a polypeptide 
B) the enzyme-substrate complex 
C) the active site 
D) the products 
E) the substrate 
A) a polypeptide 
B) the enzyme-substrate complex 
C) the active site 
D) the products 
E) the substrate

Question 14

Which of the following is absolutely necessary for diffusion to occur?

Accepted Answer

A) Energy input 
B) A differentially permeable membrane between two areas 
C) A living cell 
D) A non-permeable membrane between two areas 
E) A concentration difference between two areas 
A) Energy input 
B) A differentially permeable membrane between two areas 
C) A living cell 
D) A non-permeable membrane between two areas 
E) A concentration difference between two areas

Question 15

What is the reverse process of endocytosis called?

Accepted Answer

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

Question 16

What is the composition of a cell membrane?

Accepted Answer

A) lipids,proteins,glycolipids,and cholesterol 
B) an oil film of lipids only 
C) cellulose,proteins and cholesterol 
D) lipids and proteins 
E) a network of cellulose and glycolipids 
A) lipids,proteins,glycolipids,and cholesterol 
B) an oil film of lipids only 
C) cellulose,proteins and cholesterol 
D) lipids and proteins 
E) a network of cellulose and glycolipids

Question 17

A substance that is being dissolved is known as a solvent.

Accepted Answer

A) True 
 B)False

Question 18

If a molecule binds to the "a" site and does not release,what would happen to the chemical reaction involving enzyme?

Accepted Answer

A) No products made 
B) No change in the enzyme action 
C) A decrease in the reaction rate and fewer products made 
D) An increase in the reaction rate and more products made 
E) More substrates bound to the enzyme 
A) No products made 
B) No change in the enzyme action 
C) A decrease in the reaction rate and fewer products made 
D) An increase in the reaction rate and more products made 
E) More substrates bound to the enzyme

Question 19

A cell placed in a hypotonic solution will

Accepted Answer

A) lose water. 
B) neither gain nor lose water. 
C) both gain and lose water equally. 
D) Gain water initially and then lose water 
E) gain water. 
A) lose water. 
B) neither gain nor lose water. 
C) both gain and lose water equally. 
D) Gain water initially and then lose water 
E) gain water.

Question 20

A biologist is studying the rate of chemical reactions.Which of the following molecules would be most useful to study?

Accepted Answer

A) lipids 
B) RNA 
C) DNA 
D) carbohydrates 
E) enzymes 
A) lipids 
B) RNA 
C) DNA 
D) carbohydrates 
E) enzymes

Exam 5: Dynamic Activities of Cells

When solute molecules pass through the membrane using a carrier protein,without any energy input,it is referred to as

If a membrane only allows certain types of substances to go through,then the membrane is said to be what kind?

What process uses energy to move a substance from an area of low concentration to an area of high concentration?

Why is ATP used as the energy currency in cells?

Which of these would be a novel function for a cell membrane protein?

If 0.9% NaCl were isotonic compared to a cell,then

What model proposes that enzymes slightly alter their shape to bind to a substrate?

This figure shows an enzyme in action.What does "c" represent?

A claim that a machine that can run forever,therefore producing as much energy as it consumes,violates what?

Many enzymes require the presence of _________________ which are nonprotein organic molecules in order to be active and work correctly.

ATP is made up of:

Which part of an enzyme binds to its substrate?

Figure: -This figure shows an enzyme in action.What does "A" represent?

Which of the following is absolutely necessary for diffusion to occur?

What is the reverse process of endocytosis called?

What is the composition of a cell membrane?

A substance that is being dissolved is known as a solvent.

If a molecule binds to the "a" site and does not release,what would happen to the chemical reaction involving enzyme?

A cell placed in a hypotonic solution will

A biologist is studying the rate of chemical reactions.Which of the following molecules would be most useful to study?

Biology, the Study of Life

Basic Chemistry of Cells

Organic Molecules of Cells

Structure and Function of Cells

Pathways of Photosynthesis

Pathways of Cellular Respiration

Cellular Reproduction

Sexual Reproduction

Patterns of Genetic Inheritance

Molecular Biology of Inheritance

Regulation of Gene Activity

Biotechnology and Genomics

Evidence of Evolution

Speciation and Evolution

The Evolutionary History of Life on Earth

Evolution of Microbial Life

Evolution of Protists

Evolution of Plants and Fungi

Evolution of Animals

Evolution of Humans

Plant Organization and Homeostasis

Transport and Nutrition in Plants

Control of Growth Responses in Plants

Reproduction in Plants

Animal Organization and Homeostasis

Coordination by Neural Signaling

Sense Organs

Locomotion and Support Systems

Circulation and Cardiovascular Systems

Lymph Transport and Immunity

Digestive Systems and Nutrition

Gas Exchange and Transport in Animals

Osmoregulation and Excretion

Coordination by Hormone Signaling

Reproduction and Development

Population Ecology

Behavioral Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation Biology

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