Test Bank For Lehninger Principles of Biochemistry 8th Edition By David L. Nelson; Michael M. Cox | 9781319228002 | | Chapter 1-28 | All Chapters with Answers

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,1. In a bacterial cell, the DNA is in the:
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A) cell envelope. 6i


B) cell membrane. 6i


C) nucleoid.
D) nucleus.
E) ribosomes.


2. A major change occurring in the evolution of eukaryotes from prokaryotes was the
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development of: 6i


A) DNA.
B) photosynthetic capability. 6i


C) plasma membranes. 6i


D) ribosomes.
E) the nucleus. 6i




3. In eukaryotes, the nucleus is enclosed by a double membrane called the:
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A) cell membrane. 6i


B) nuclear envelope. 6i


C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. The dimensions of living cells are limited, on the lower end by the minimum number of
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biomolecules necessary for function, and on the upper end by the rate of diffusion of s
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olutes such as oxygen. Except for highly elongated cells, they usually have lengths and d
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iameters in the range of:
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A) 0.1 m to 10 m. 6i 6i 6i 6i


B) 0.3 m to 30 m. 6i 6i 6i 6i


C) 0.3 m to 100 m. 6i 6i 6i 6i


D) 1 m to 100 m.
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E) 1 m to 300 m.
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5. Which group of single-
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celled microorganisms has many members found growing in extreme environments
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?
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 energy—
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it is therefore a:
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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 reticulum 6i 6i 6i


B) peroxisomes, lysosomes, plasma membrane 6i 6i 6i


C) proteasomes, peroxisomes, lysosomes 6i 6i


D) mitochondria, endoplasmic reticulum, peroxisomes 6i 6i 6i


E) All of the answers are correct.
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8. Which list has the cellular components arranged in order of INCREASING 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
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E) protein < ribosome < mitochondrion < amino acid
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9. The three-
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dimensional structure of macromolecules is formed and maintained primarily through n
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oncovalent interactions. Which one of the following is NOT considered a noncovalent
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interaction?
A) carbon-carbon bonds 6i


B) hydrogen bonds 6i


C) hydrophobic interactions 6i


D) ionic interactions 6i


E) van der Waals interactions
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10. Which element is NOT among the four most abundant in living organisms?
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A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus




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