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Multiple Choice Quiz
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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 drive ________.
A)anabolic reactions
B)oxidative phosphorylation
C)beta oxidation in the mitochondria
D)reduction of cytochrome oxidase
10
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
11
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
12
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
13
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
14
The molecule that an enzymes reacts with is called its _____.
A)coenzyme
B)cofactor
C)metabolic pathway
D)substrate
15
Which of the following terms includes all of the others?
A)coenzyme
B)cofactor
C)enzyme
D)protein
16
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
17
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
18
What are the direct end products of the Citric Acid Cycle?
A)carbon dioxide and ATP
B)ATP and acetyl-coenzyme-A
C)ADP and heat
D)citric acid
19
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 and oxygen
20
Which molecule represents the storage form of glucose in the liver?
A)glycogen
B)glucagon
C)disaccharide
D)lactic acid
21
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
22
Genes are functional regions found within molecules of ______.
A)ribonucleic acid
B)adenosine triphosphate
C)adenine and guanine
D)deoxyribonucleic acid
23
Which of the following is not a compatible base pairing in DNA?
A)adenine-uracil
B)adenine-thymine
C)cytosine-guanine
D)guanine-cytosine
24
The production of mRNA from a DNA template is termed _____.
A)transcription
B)translation
C)replication
D)mutation
25
The base sequence termed the anticodon is found on molecules of _______.
A)DNA
B)tRNA
C)mRNA
D)rRNA







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