Question 1

In high levels,alcohol is toxic.Why would a creature utilize fermentation if it were wasteful of the energy in food molecules and posed the threat of killing itself?

Accepted Answer

A) The organism can survive short spells of anaerobic conditions and maintain growth and reproduction 
B) If glucose levels are not high,there may be time to disperse the alcohol "waste" 
C) Fermentation can provide a rapid burst of ATP since it does not have to go through the full breakdown cycle 
D) All of the choices are advantages 
A) The organism can survive short spells of anaerobic conditions and maintain growth and reproduction 
B) If glucose levels are not high,there may be time to disperse the alcohol "waste" 
C) Fermentation can provide a rapid burst of ATP since it does not have to go through the full breakdown cycle 
D) All of the choices are advantages

Question 2

Which organelle contains ATP synthetase complexes in its membrane?

Accepted Answer

A) Golgi complexes 
B) Mitochondria 
C) Vesicles 
D) Endoplasmic reticulum 
A) Golgi complexes 
B) Mitochondria 
C) Vesicles 
D) Endoplasmic reticulum

Question 3

Before a chemical bond is stressed enough to break,___________ must be supplied.

Accepted Answer

The answer of Before a chemical bond is stressed enough...

Question 4

When an energy-requiring reaction is driven by an energy-yielding reaction,it is called a/an

Accepted Answer

A) exergonic reaction. 
B) endergonic reaction. 
C) endo-exergonic reaction. 
D) coupled reaction. 
A) exergonic reaction. 
B) endergonic reaction. 
C) endo-exergonic reaction. 
D) coupled reaction.

Question 5

Outline a hypothetical scenario of the evolution of metabolism.

Accepted Answer

Hypothetically, the evolution of metabol

Question 6

Can virtually any organic compound be broken down (assuming it is non-toxic)?

Accepted Answer

Virtually any organic compound can indee

Question 7

If anaerobic glycolysis is only one-eighteenth as efficient as complete oxidation of glucose to carbon dioxide,then why would an organism use such an inefficient pathway?

Accepted Answer

There are several reasons why an organis

Question 8

If there are ten different intermediate products produced in stages leading to a molecule in a cell,we can expect that there

Accepted Answer

A) is one enzyme that carries this process through each of the ten stages to the end product. 
B) is one enzyme for degradation and another enzyme for synthesis. 
C) may not be any enzymes involved if this is a natural cell product. 
D) are about ten enzymes,at least one responsible for each step in the metabolic pathway. 
A) is one enzyme that carries this process through each of the ten stages to the end product. 
B) is one enzyme for degradation and another enzyme for synthesis. 
C) may not be any enzymes involved if this is a natural cell product. 
D) are about ten enzymes,at least one responsible for each step in the metabolic pathway.

Question 9

When animals use anaerobic fermentation,which process must occur first?

Accepted Answer

A) The Krebs cycle 
B) Glycolysis 
C) The electron transport system 
D) Fermentation 
A) The Krebs cycle 
B) Glycolysis 
C) The electron transport system 
D) Fermentation

Question 10

Animals exhale carbon dioxide that was primarily produced in

Accepted Answer

A) glycolysis. 
B) the electron transport system. 
C) lactate fermentation. 
D) the Krebs cycle. 
A) glycolysis. 
B) the electron transport system. 
C) lactate fermentation. 
D) the Krebs cycle.

Question 11

Enzymes

Accepted Answer

A) lower the amount of energy present in the substrate. 
B) raise the amount of energy present in the substrate. 
C) lower the energy of activation of a reaction by binding to the substrate. 
D) raise the energy of activation of a reaction by binding to the substrate. 
A) lower the amount of energy present in the substrate. 
B) raise the amount of energy present in the substrate. 
C) lower the energy of activation of a reaction by binding to the substrate. 
D) raise the energy of activation of a reaction by binding to the substrate.

Question 12

Which is true about the activity of an enzyme?

Accepted Answer

A) Lower temperatures generally increase enzyme activity. 
B) Enzymes are altered or destroyed by the reaction. 
C) Enzymes are not products of the reactions they catalyze. 
D) Rates of reactions are independent of substrate concentration. 
A) Lower temperatures generally increase enzyme activity. 
B) Enzymes are altered or destroyed by the reaction. 
C) Enzymes are not products of the reactions they catalyze. 
D) Rates of reactions are independent of substrate concentration.

Question 13

Coupling occurs when energy released by an exergonic reaction is

Accepted Answer

A) used to drive another exergonic reaction. 
B) used to drive an endergonic reaction. 
C) lost as nonusable heat to the environment. 
D) used to decrease the entropy of the universe. 
A) used to drive another exergonic reaction. 
B) used to drive an endergonic reaction. 
C) lost as nonusable heat to the environment. 
D) used to decrease the entropy of the universe.

Question 14

The most accurate portrayal of ATP is that

Accepted Answer

A) ATP is a fuel. 
B) ATP is a storehouse of energy set aside for some future need. 
C) ATP is an energy-coupling agent and is formed and used as needed. 
D) ATP is produced and consumed by the same reaction. 
A) ATP is a fuel. 
B) ATP is a storehouse of energy set aside for some future need. 
C) ATP is an energy-coupling agent and is formed and used as needed. 
D) ATP is produced and consumed by the same reaction.

Question 15

If the second law of thermodynamics states that a closed system moves toward increasing disorder,then how can a living system not only maintain organization but also increase it?

Accepted Answer

The second law of thermodynamics states

Question 16

ATP is

Accepted Answer

A) an enzyme used widely in all kinds of cells. 
B) a driver of both sides of the coupled reaction that forms ADP. 
C) a molecule that carries a great deal of chemical energy in the bond between the terminal two phosphates. 
D) the building block of all other cell structures. 
A) an enzyme used widely in all kinds of cells. 
B) a driver of both sides of the coupled reaction that forms ADP. 
C) a molecule that carries a great deal of chemical energy in the bond between the terminal two phosphates. 
D) the building block of all other cell structures.

Question 17

Glycolysis involves the conversion of 6-carbon glucose into 3-carbon fragments of ________ ________.

Accepted Answer

The answer of Glycolysis involves the conversion of 6-carbon glucose...

Exam 4: Cellular Metabolism

In high levels,alcohol is toxic.Why would a creature utilize fermentation if it were wasteful of the energy in food molecules and posed the threat of killing itself?

Which organelle contains ATP synthetase complexes in its membrane?

Before a chemical bond is stressed enough to break,___________ must be supplied.

When an energy-requiring reaction is driven by an energy-yielding reaction,it is called a/an

Outline a hypothetical scenario of the evolution of metabolism.

Can virtually any organic compound be broken down (assuming it is non-toxic)?

If anaerobic glycolysis is only one-eighteenth as efficient as complete oxidation of glucose to carbon dioxide,then why would an organism use such an inefficient pathway?

If there are ten different intermediate products produced in stages leading to a molecule in a cell,we can expect that there

When animals use anaerobic fermentation,which process must occur first?

Animals exhale carbon dioxide that was primarily produced in

Enzymes

Which is true about the activity of an enzyme?

Coupling occurs when energy released by an exergonic reaction is

The most accurate portrayal of ATP is that

If the second law of thermodynamics states that a closed system moves toward increasing disorder,then how can a living system not only maintain organization but also increase it?

ATP is

Glycolysis involves the conversion of 6-carbon glucose into 3-carbon fragments of ________ ________.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

Chaetognaths, echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, Protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distribution

Animal Ecology

Filters

Glycolysis involves the conversion of 6-carbon glucose into 3-carbon fragments of .