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