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, Test Bank: LehningerPrinciples of Biochemistry, 8th
cs cs cs cs cs cs
Edition, David L. Nelson Chapters 1-28.
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1. In a bacterial cell, the DNA is in
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the:
cs
A) cell envelope. cs
B) cell membrane. cs
C) nucleoid.
D) nucleus.
E) ribosomes.
2. A major change occurring in the evolution of eukaryotes from prokaryotes was
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c the s
development of: cs
A) DNA.
B) photosynthetic capability. c s
C) plasma membranes. c s
D) ribosomes.
E) the nucleus. c s
3. In eukaryotes, the nucleus is enclosed by a double membrane called
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the:
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A) cell membrane. cs
B) nuclear envelope. c s
C) nucleolus.
D) nucleoplasm.
E) nucleosome.
4. The dimensions of living cells are limited, on the lower end by the
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minimum number of biomolecules necessary for function, and on the upper
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end by the rate of diffusion of
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solutes such as oxygen. Except for highly elongated cells, they usually have lengths
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and diameters in the range of:
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A) 0.1 m to 10 m. c s cs cs c s
B) 0.3 m to 30 m. c s cs cs c s
C) 0.3 m to 100 m. c s cs cs c s
D) 1 m to 100 m. c s cs cs c s
E) 1 m to 300 m. c s cs cs c s
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,5. Which group of single-celled microorganisms has many members found growing
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c in s
extreme environments? c s
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) None of the answers is correct. cs c s c s c s c s
6. The bacterium E. coli requires simple organic molecules for growth and
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energy— it is
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therefore a: cs
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.
7. Which is a list of organelles?
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A) mitochondria, chromatin, endoplasmic c s c s
reticulum cs
B) peroxisomes, lysosomes, plasma membrane cs c s cs
C) proteasomes, peroxisomes, lysosomes cs c s
D) mitochondria, endoplasmic reticulum, cs cs
peroxisomes cs
E) All of the answers are correct.
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8. Which list has the cellular components arranged in order of INCREASING
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size?
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A) amino acid < protein < mitochondrion < ribosome
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B) amino acid < protein < ribosome < mitochondrion
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C) amino acid < ribosome < protein < mitochondrion
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D) protein < amino acid < mitochondrion < ribosome c s cs c s c s c s c s c s
E) protein < ribosome < mitochondrion < amino acid c s cs c s cs c s c s c s
9. The three-dimensional structure of macromolecules is formed and maintained
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primarily through noncovalent interactions. Which one of the following is
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NOT considered a
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noncovalent interaction? cs
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, A) carbon-carbon bonds cs
B) hydrogen bonds cs
C) hydrophobic interactions cs
D) ionic interactions c s
E) van der Waals interactions cs c s c s
10. Which element is NOT among the four most abundant in living
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c organisms?
s
A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus
11. The four covalent bonds in methane (CH4) are arranged around carbon to
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give which
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geometry?
A) linear
B) tetrahedral
C) trigonal bipyramidal cs
D) trigonal planar cs
E) trigonal pyramidal cs
12. What functional groups are present on this
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molecule?
cs
A) ether and aldehyde cs c s
B) hydroxyl and aldehyde cs c s
C) hydroxyl and carboxylic acid c s cs c s
D) hydroxyl and ester cs c s
E) hydroxyl and ketone cs c s
13. The macromolecules that serve in the storage and transmission of genetic
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c information
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are:
A) carbohydrates.
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