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, Test Bank: Lehninger Principles of Biochemistry, 8th
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Edition, David L. Nelson Chapters 1-28.
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1. In a bacterial cell, the DNA is
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h1in the: h1
A) cell envelope. h1
B) cell membrane. h1
C) nucleoid.
D) nucleus.
E) ribosomes.
2. A major change occurring in the evolution of eukaryotes from prokaryotes
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was the
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development of: h1
A) DNA.
B) photosynthetic capability. h1
C) plasma membranes. h1
D) ribosomes.
E) the nucleus. h1
3. In eukaryotes, the nucleus is enclosed by a double membrane
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h1called the: h 1
A) cell membrane. h1
B) nuclear envelope. h1
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
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h1upper end by the rate of diffusion of
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solutes such as oxygen. Except for highly elongated cells, they usually have
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lengths and diameters in the range of:
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A) 0.1 m to 10 m. h1 h1 h1 h1
B) 0.3 m to 30 m. h1 h1 h1 h1
C) 0.3 m to 100 m. h1 h1 h1 h1
D) 1 m to 100 m. h1 h1 h1 h1
E) 1 m to 300 m. h1 h1 h1 h1
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,5. Which group of single-celled microorganisms has many members found
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growing in
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extreme environments?h1
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) None of the answers is correct.
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6. The bacterium E. coli requires simple organic molecules for growth and
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h1 energy— it is h1 h1
therefore a: h1
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 h1 h1
reticulum
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B) peroxisomes, lysosomes, plasma membrane h1 h1 h1
C) proteasomes, peroxisomes, lysosomes h1 h1
D) mitochondria, endoplasmic reticulum, h1 h1
peroxisomes
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E) All of the answers are correct.
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8. Which list has the cellular components arranged in order of
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h1INCREASING size? h 1
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
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E) protein < ribosome < mitochondrion < amino acid
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9. The three-dimensional structure of macromolecules is formed and maintained
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primarily through noncovalent interactions. Which one of the following
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h1is NOT considered a
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noncovalent interaction? h1
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, A) carbon-carbon bonds h1
B) hydrogen bonds h1
C) hydrophobic interactions h1
D) ionic interactions h1
E) van der Waals interactions
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10. Which element is NOT among the four most abundant in
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living organisms?
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A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus
11. The four covalent bonds in methane (CH4) are arranged around carbon
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to give which
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geometry?
A) linear
B) tetrahedral
C) trigonal bipyramidal h1
D) trigonal planar h1
E) trigonal pyramidal h1
12. What functional groups are present on
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this molecule?
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A) ether and aldehyde
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B) hydroxyl and aldehyde h1 h1
C) hydroxyl and carboxylic acid
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D) hydroxyl and ester h1 h1
E) hydroxyl and ketone h1 h1
13. The macromolecules that serve in the storage and transmission of
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genetic information
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are:
A) carbohydrates.
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