Indicate the answer choice that best completes the statement or answers the question. 1. Hereditary information (with the exception of some viruses) is preserved in:
a. deoxyribonucleic acid.
b. membrane structures.
c. nuclei.
d. polysaccharides.
e. ribonucleic acid. 2. Accurate folding of a protein does NOT depend on:
a. proper pH.
b. correct ionic strength.
c. correct temperature.
d. correct metal ion concentration.
e. binding to DNA. 3. What is the correct name for the configuration of the molecule shown?
a. orthogonal
b. trans
c. cis
d. zis
e. chiros 4. Which statement is NOT true about the formation of early organisms?
a. The first organisms were anaerobic because the atmosphere was devoid of oxygen.
b. The original electron donor for photosynthetic processes was probably H2S.
c. Oxygen, a powerful oxidant, was probably welcomed by anaerobic organisms as a preferable choice
for metabolic reactions.
d. The transfer of electrons to O2 releases more energy than transferring electrons to SO42–.
e. Cyanobacteria are modern descendants of early photosynthetic oxygen-producers.
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Name: Class: Date: Chap 01_8e 5. Enzymes are biological catalysts that enhance the rate of a reaction by:
a. decreasing the activation energy.
b. decreasing the amount of free energy released.
c. increasing the activation energy.
d. increasing the amount of free energy released.
e. increasing the energy of the transition state. 6. Which ranking correctly describes the rigidity of the red bond (the central bond) shown in the figure?
a. 2 = most rigid, 3 = least rigid
b. 1 = most rigid, 5 = least rigid
c. 4 = most rigid, 3 = least rigid
d. 2 = most rigid, 1 = least rigid
e. 4 = most rigid, 1 = least rigid 7. When Stanley Miller, in Harold Urey's laboratory, subjected a gaseous mixture mimicking the prebiotic
atmosphere on Earth to electrical sparks, he found that _____ were formed.
a. amino acids
b. aldehydes
c. ribonucleotides
d. both amino acids and aldehydes
e. amino acids, aldehydes, and ribonucleotides
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Name: Class: Date: Chap 01_8e
a. deoxyribonucleic acid.
b. membrane structures.
c. nuclei.
d. polysaccharides.
e. ribonucleic acid. 2. Accurate folding of a protein does NOT depend on:
a. proper pH.
b. correct ionic strength.
c. correct temperature.
d. correct metal ion concentration.
e. binding to DNA. 3. What is the correct name for the configuration of the molecule shown?
a. orthogonal
b. trans
c. cis
d. zis
e. chiros 4. Which statement is NOT true about the formation of early organisms?
a. The first organisms were anaerobic because the atmosphere was devoid of oxygen.
b. The original electron donor for photosynthetic processes was probably H2S.
c. Oxygen, a powerful oxidant, was probably welcomed by anaerobic organisms as a preferable choice
for metabolic reactions.
d. The transfer of electrons to O2 releases more energy than transferring electrons to SO42–.
e. Cyanobacteria are modern descendants of early photosynthetic oxygen-producers.
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Macmillan
Learning.
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Name: Class: Date: Chap 01_8e 5. Enzymes are biological catalysts that enhance the rate of a reaction by:
a. decreasing the activation energy.
b. decreasing the amount of free energy released.
c. increasing the activation energy.
d. increasing the amount of free energy released.
e. increasing the energy of the transition state. 6. Which ranking correctly describes the rigidity of the red bond (the central bond) shown in the figure?
a. 2 = most rigid, 3 = least rigid
b. 1 = most rigid, 5 = least rigid
c. 4 = most rigid, 3 = least rigid
d. 2 = most rigid, 1 = least rigid
e. 4 = most rigid, 1 = least rigid 7. When Stanley Miller, in Harold Urey's laboratory, subjected a gaseous mixture mimicking the prebiotic
atmosphere on Earth to electrical sparks, he found that _____ were formed.
a. amino acids
b. aldehydes
c. ribonucleotides
d. both amino acids and aldehydes
e. amino acids, aldehydes, and ribonucleotides
Copyright
Macmillan
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Name: Class: Date: Chap 01_8e
