McGraw-Hill OnlineMcGraw-Hill Higher EducationLearning Center
Student Center | Instructor Center | Information Center | Home
Human Body Case Studies
Animation Activities
Study Skills
Additional Readings
Histology
GetBodySmart
Career Information
Course Tools
Martin Lab Manual, Webquest
Laboratory Exercises
PowerWeb
BioCourse.com
Essential Study Partner
Student Tutorial Service
GradeSummit
Message Board
NetTutor
Chapter Overview
Study Outline
Case Studies
Internet Activities
Chapter Weblinks
Crossword Puzzle
Flashcards
Labeling Exercises
True or False Quiz
Multiple Choice Quiz
Feedback True or False Quiz
Feedback Multiple Choice Quiz
Concentration
Feedback
Help Center


Book cover image
Hole's Human Anatomy & Physiology, 9/e
David Shier, Washtenaw Community College
Ricki Lewis, The University at Albany
Jackie Butler, Grayson County Community College

Cellular Metabolism

Multiple Choice Quiz

Please answer all questions



1

Which statement is not true about catabolic processes?
A)They break down larger molecules into smaller ones.
B)They decompose carbohydrates, lipids, and proteins.
C)Water molecules separate bonds, resulting in smaller molecules.
D)Dehydration synthesis is involved in catabolic processes.
2

Enzymes function in chemical reactions to ____________________.
A)lower the energy of activation needed to start the reaction
B)act as substrate molecules
C)prevent the development of metabolic pathways
D)keep reactants from interacting
3

Most of the readily-available energy stored in ATP is stored during the ________________.
A)decomposition of ATP to ADP
B)phosphorylation of ADP to form ATP
C)phosphorylation of AMP to ADP
D)manufacture of adenosine
4

The first several steps of glycolysis are considered the energy-investment steps because ______________.
A)energy within glucose is expended to start the pathway
B)energy is stored in the form of ATP and expended later
C)energy from ATP is transferred to intermediates along the pathway to drive the reactions
D)metabolic pathways can be interconnected, and glucose could enter more than one pathway
5

The steps of glycolysis occur in the ________________, the transition reaction occurs in the _________________, and the citric acid cycle (Krebs cycle) is carried out in the _________________ of the cell.
A)cytosol; mitochondrion; mitochondrion
B)cytosol; cytosol; mitochondrion
C)liver; muscle; stored fat reserves
D)cytosol; ribosome; mitochondrion
6

The acetyl group is transported to the citric acid cycle (Krebs cycle) by what carrier?
A)mitochondrial inner membrane
B)FADH2
C)coenzyme A
D)oxaloacetic acid
7

During glycolysis, one molecule of glucose is broken down to ______ molecules of pyruvic acid, _______ hydrogen atoms are released, and there is a net gain of _______ ATP molecules.
A)2; 4; 2
B)4; 2; 4
C)4; 8; 32
D)1; 4; 32
8

What occurs during the citric acid cycle?
A)Glucose is generated.
B)Electrons are passed along cytochromes.
C)Carbon dioxide and hydrogen atoms are released, and two molecules of ATP form.
D)Oxaloacetic acid is regenerated from coenzyme A.
9

The purpose of the hydrogen carriers, NADH and FADH2, is to create______________.
A)hold energy from pyruvate until it can be transferred during the transition reaction
B)transfer iron to the cytochromes
C)generate ATP within the mitochondrial matrix
D)hold energy from the bonds of glucose and carry it to the electron \A D transport chain \MC Molecules of ATP are generated in the electron transport chain by _____________. (pp. 112-113)
E)anabolic reactions
F)oxidative phosphorylation
G)beta oxidation in the mitochondria
H)reduction of cytochrome oxidase
10

One of the consequences of inadequate dietary carbohydrate is breakdown of stored fat and the unhealthy accumulation of ____________.
A)ketone bodies
B)glucose in the liver
C)fatty acid oxidases
D)glycogen
11

Protein molecules can also be used to supply energy for the body, but to do so, proteins must first be stripped of their ____________.
A)COOH groups
B)ATP
C)-NH2 groups
D)urea
12

Metabolic pathways are regulated by a(n) ____________ enzyme, which is also often the first enzyme in a series.
A)activating
B)rate-limiting
C)accelerating
D)threshold
13

A genetic mutation refers to _________________.
A)a missing chromosome only
B)a missing or altered nucleotide base or a missing gene
C)an effect that is deleterious only
D)an effect that is beneficial, at least most of the time
14

The process of copying DNA to be used in protein synthesis is called __________ and occurs ______________.
A)translation; with ribosomes
B)complementary pairing; in the cytoplasm
C)DNA replication; with codons and anticodons
D)Transcription; in the nucleus
15

Which of the following is an example of a catabolic reaction?
A)synthesis of cholesterol
B)production of ketones
C)hydrolysis of proteins
D)dehydration reactions involving monosaccharides
16

The molecule that an enzymes reacts with is called its _____.
A)coenzyme
B)cofactor
C)metabolic pathway
D)substrate
17

Which of the following terms incudes all of the others?
A)coenzyme
B)cofactor
C)enzyme
D)protein
18

What is the combination of the five carbon sugar and the nitrogenous base called in ATP?
A)ribose
B)adenine
C)adenosine diphosphate
D)adenosine
19

If sufficient oxygen within a cell were available, what would be the end product of glycolysis?
A)pyruvic acid
B)lactic acid
C)phosphoenolpyruvate
D)glucose-6-phosphate
20

What are the direct end products of the Citric Acid Cycle?
A)carbon dioxide and water
B)ATP and acetyl-coenzyme-A
C)ADP and heat
D)citric acid
21

What are the final end products of the electron transport chain?
A)ATP and NADH
B)ATP and water
C)ADP and hydrogen
D)ATP oxygen
22

Which molecule represents the storage form of glucose in the liver?
A)glycogen
B)glucagon
C)disaccharide
D)lactic acid
23

Which reaction must occur before a triglyceride is to be used for energy?
A)beta oxidation
B)hydrolysis
C)glycolysis
D)liponeogenesis
24

Potentially life-threatening ketone bodies are the result of ______metabolism.
A)lipid
B)protein
C)carbohydrate
D)cholesterol
25

The first step in the utilization of proteins for energy is ________which occurs in the liver.
A)beta oxidation
B)deamination
C)hydrolysis
D)amino acid synthesis
26

Genes are functional regions found within molecules of ______.
A)ribonucleic acid
B)adenosinetriphosphate
C)adenine and guanine
D)deoxyribonucleic acid
27

Which of the following is not a compatible base pairing in DNA?
A)adenine-uracil
B)adenine-thymine
C)cytosine-guanine
D)guanine-cytosine
28

The production of mRNA from a DNA template is termed _____.
A)transcription
B)translation
C)replication
D)mutation
29

The base sequence termed the anticodon is found on molecules of _______.
A)DNA
B)tRNA
C)mRNA
D)rRNA