Question 1

Which of the following is NOT true of enzyme behavior?

Accepted Answer

A) Enzyme shape may change during catalysis. 
B) The active site of an enzyme orients its substrate molecules, thereby promoting interaction of their reactive parts. 
C) All enzymes have an active site where substrates are temporarily bound. 
D) Each enzyme can catalyze a wide variety of different reactions. 
E) Enzyme activity is affected by pH and temperature. 
A) Enzyme shape may change during catalysis. 
B) The active site of an enzyme orients its substrate molecules, thereby promoting interaction of their reactive parts. 
C) All enzymes have an active site where substrates are temporarily bound. 
D) Each enzyme can catalyze a wide variety of different reactions. 
E) Enzyme activity is affected by pH and temperature.

Question 2

Which of the following terms best describes the role of certain metal ions and coenzymes in metabolic processes?

Accepted Answer

A) reactants 
B) intermediates 
C) cofactors 
D) products 
E) catalysts 
A) reactants 
B) intermediates 
C) cofactors 
D) products 
E) catalysts

Question 3

Bioluminescence involves all of the following EXCEPT

Accepted Answer

A) stable electrons. 
B) ATP. 
C) oxygen. 
D) luciferin. 
E) luciferase. 
A) stable electrons. 
B) ATP. 
C) oxygen. 
D) luciferin. 
E) luciferase.

Question 4

Enzymes

Accepted Answer

A) control the speed of a reaction. 
B) change shapes to facilitate certain reactions. 
C) may place physical stress on the bonds of the substrate. 
D) may require cofactors. 
E) do all of these. 
A) control the speed of a reaction. 
B) change shapes to facilitate certain reactions. 
C) may place physical stress on the bonds of the substrate. 
D) may require cofactors. 
E) do all of these.

Question 5

The blood circulatory system transports __________ percent of the absorbed ethanol to the liver.

Accepted Answer

A) 10 
B) 25 
C) 50 
D) 75 
E) almost 100 
A) 10 
B) 25 
C) 50 
D) 75 
E) almost 100

Question 6

Questions refer to the figure above.
  
-The figure represents

Accepted Answer

A) an exergonic reaction. 
B) a metabolic pathway. 
C) allosteric inhibition. 
D) allosteric activation. 
E) all of these. 
A) an exergonic reaction. 
B) a metabolic pathway. 
C) allosteric inhibition. 
D) allosteric activation. 
E) all of these.

Question 7

Which of the following violate(s) the second law of thermodynamics?

Accepted Answer

A) gasoline engines 
B) life 
C) nuclear power plants 
D) stars such as the sun 
E) none of these 
A) gasoline engines 
B) life 
C) nuclear power plants 
D) stars such as the sun 
E) none of these

Question 8

Questions refer to the figure above.
  
-The substance indicated as "B" is a(n)

Accepted Answer

A) inhibitor. 
B) activator. 
C) substrate. 
D) coenzyme. 
E) cofactor. 
A) inhibitor. 
B) activator. 
C) substrate. 
D) coenzyme. 
E) cofactor.

Question 9

Which of the following may show enzymatic activity? I.lipids
II)proteins
III)RNA

Accepted Answer

A) I only 
B) II only 
C) III only 
D) I and II 
E) II and III 
A) I only 
B) II only 
C) III only 
D) I and II 
E) II and III

Question 10

Essentially, the first law of thermodynamics says that

Accepted Answer

A) one form of energy cannot be converted into another. 
B) entropy is increasing in the universe. 
C) energy can be neither created nor destroyed. 
D) energy cannot be converted into matter or matter into energy. 
E) all of these are true. 
A) one form of energy cannot be converted into another. 
B) entropy is increasing in the universe. 
C) energy can be neither created nor destroyed. 
D) energy cannot be converted into matter or matter into energy. 
E) all of these are true.

Question 11

The enzyme responsible for breaking down alcohol is

Accepted Answer

A) alcohol methylase. 
B) alcohol polyphosphorylase. 
C) hydroxyl alcoholgenase. 
D) transmethylogenase. 
E) alcohol dehydrogenase. 
A) alcohol methylase. 
B) alcohol polyphosphorylase. 
C) hydroxyl alcoholgenase. 
D) transmethylogenase. 
E) alcohol dehydrogenase.

Question 12

ATP contains

Accepted Answer

A) alanine. 
B) arginine. 
C) ribose. 
D) tyrosine. 
E) glucose. 
A) alanine. 
B) arginine. 
C) ribose. 
D) tyrosine. 
E) glucose.

Question 13

Which reaction is NOT an exergonic reaction?

Accepted Answer

A) protein synthesis 
B) explosion 
C) fire 
D) respiration 
E) movement 
A) protein synthesis 
B) explosion 
C) fire 
D) respiration 
E) movement

Question 14

The most common form of low-quality energy released in energy conversions is

Accepted Answer

A) metabolic. 
B) heat. 
C) entropy. 
D) light. 
E) electricity. 
A) metabolic. 
B) heat. 
C) entropy. 
D) light. 
E) electricity.

Exam 6: Ground Rules of Metabolism

Which of the following is NOT true of enzyme behavior?

Which of the following terms best describes the role of certain metal ions and coenzymes in metabolic processes?

Bioluminescence involves all of the following EXCEPT

Enzymes

The blood circulatory system transports __________ percent of the absorbed ethanol to the liver.

Questions refer to the figure above. -The figure represents

Which of the following violate(s) the second law of thermodynamics?

Questions refer to the figure above. -The substance indicated as "B" is a(n)

Which of the following may show enzymatic activity? I.lipids II)proteins III)RNA

Essentially, the first law of thermodynamics says that

The enzyme responsible for breaking down alcohol is

ATP contains

Which reaction is NOT an exergonic reaction?

The most common form of low-quality energy released in energy conversions is

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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