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1) Stanley Miller set out to demonstrate an explanation for the origins of organic molecules using
a combination of simple organic molecules, heat and periodic bursts of electricity through the
mixture, ultimately producing which kind of molecules?
A) carbohydrates
B) amino acids
C) lipids
D) glycoproteins
E) nucleic acids
Answer: B
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
2) Glycosylated molecules are those formed with which group of organic compounds?
A) lipids
B) nucleic acids
C) lysosomes
D) cholesterol
E) DNA
Answer: A
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
3) Cells regulate their level of activity by regulating the amount of proteins present in the cell at
any given time, so an up regulation of enzymes would be expected to
A) increase the cell’s response that is produced by the reaction catalyzed by the enzyme.
B) decrease the level of productivity of chemical reactions that rely on them.
C) have no effect on the rate of reactions catalyzed by the enzymes.
D) decrease the rate of reactions catalyzed by the enzymes.
E) both decrease the level of productivity of chemical reactions that rely on them and decrease
the rate of reactions catalyzed by the enzymes.
Answer: A
Section: Protein Interactions
Learning Outcome: 2.9
Bloom’s Taxonomy: Comprehension
2
Copyright © 2016 Pearson Education, Ltd.
4) When an enzyme reaches its saturation point, the amount of
A) substrate for the enzyme to act upon is very high.
B) substrate for the enzyme to act upon is very low.
C) product produced continues to increase.
D) product produced by the enzyme decreases.
E) substrate for the enzyme to act upon is very low and the amount of product produced by the
enzyme decreases.
Answer: A
Section: Protein Interactions
Learning Outcome: 2.8
Bloom’s Taxonomy: Comprehension
5) Which group of elements makes up more than 90% of the body’s mass?
A) O, H, Na
B) C, Na, K
C) O, Ca, H
D) Ca, C, O
E) O, C, H
Answer: E
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
6) The organic molecules known as phospholipids are key components of cell membranes and
composed of which molecules?
A) amino acids
B) nucleotides
C) glycerol
D) fatty acids
E) both glycerol and fatty acids
Answer: E
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Knowledge
7) Chromium is
A) not an element in the periodic table.
B) a protein.
C) a dietary supplement with no natural role in the body.
D) an essential element involved in glucose metabolism.
Answer: D
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Knowledge
3
Copyright © 2016 Pearson Education, Ltd.
8) Which of the following is a way to recognize a carbohydrate by looking at its name only?
A) It ends in -ase.
B) It ends in -ose.
C) It begins with nucleo-.
D) It begins with proteo-.
E) It begins with lipo-.
Answer: B
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
9) Which of the following is NOT considered an essential element for a living organism?
A) carbon
B) hydrogen
C) mercury
D) oxygen
E) nitrogen
Answer: C
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Knowledge
10) The largest carbohydrate molecules are called polysaccharides because they are composed of
________ molecules bonded together with one another.
A) amino acid
B) nucleotide
C) purine
D) pyrimidine
E) simple sugar
Answer: E
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
11) Essential amino acids that are used to build proteins
A) exist in twenty six different configurations.
B) are linked together by ionic chemical bonds in proteins.
C) can be used medically for both diagnosis and treatment of diseases.
D) are derived from the foods we eat and digest.
E) can only be made by cells within our bodies.
Answer: D
Section: Molecules and Bonds
Learning Outcome: 2.1
Bloom’s Taxonomy: Comprehension
4
Copyright © 2016 Pearson Education, Ltd.
12) Which of the following are examples of cations?
A) SO4
2-
B) Ca2+
C) HPO4
2-
D) HCO3
–
E) ClAnswer: B
Section: Molecules and Bonds
Learning Outcome: 2.2
Bloom’s Taxonomy: Comprehension
13) A positively-charged ion is called a(n)
A) electron.
B) proton.
C) neutron.
D) cation.
E) anion.
Answer: D
Section: Molecules and Bonds
Learning Outcome: 2.2
Bloom’s Taxonomy: Knowledge
14) The most important polar molecule is ________ because it is practically a universal solvent.
A) water
B) bicarbonate
C) sodium chloride
D) magnesium sulfate
E) nucleic acid
Answer: A
Section: Molecules and Bonds
Learning Outcome: 2.3
Bloom’s Taxonomy: Knowledge
15) A molecule referred to as highly soluble is
A) very likely to dissolve in water.
B) not very likely to dissolve in water.
C) called aqueous.
D) very likely to dissolve in water and is called aqueous.
E) not very likely to dissolve in water and is called aqueous.
Answer: A
Section: Noncovalent Interactions
Learning Outcome: 2.4
Bloom’s Taxonomy: Comprehension
5
Copyright © 2016 Pearson Education, Ltd.
16) A free radical is a
A) charged particle.
B) molecule with an extra electron.
C) molecule with an extra neutron.
D) molecule with an extra proton.
E) molecule with an unpaired electron.
Answer: E
Section: Molecules and Bonds
Learning Outcome: 2.2
Bloom’s Taxonomy: Knowledge
17) The chemical bonding behavior of an atom is directly determined by the
A) number of protons.
B) number of neutrons.
C) number and arrangement of electrons.
D) size of the atom.
E) mass of the atom.
Answer: C
Section: Molecules and Bonds
Learning Outcome: 2.2
Bloom’s Taxonomy: Comprehension
18) Atoms in a covalent molecule
A) share electrons in single pairs.
B) share electrons in double pairs.
C) share electrons in triple pairs.
D) share electrons singly, never in pairs.
E) can share electrons in single pairs, double pairs, or triple pairs.
Answer: E
Section: Molecules and Bonds
Learning Outcome: 2.3
Bloom’s Taxonomy: Comprehension
19) The weak interactions between atoms that keep atoms near each other are called
A) hydrogen bonds.
B) van der Waals forces.
C) ionic bonds.
D) hydrogen bonds and van der Waals forces.
E) van der Waals forces and ionic bonds.
Answer: D
Section: Molecules and Bonds
Learning Outcome: 2.3
Bloom’s Taxonomy: Comprehension
