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Test Bank - Lehninger Principles of Biochemistry, 8th Edition (Nelson) Chapter 1-28 | All Chapters |COMPLETE GUIDE |GUARANTEED SUCCESS.$17.99
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,1. In a bacterial cell, the DNA is in the:
P P P P P P P P
A) cell envelope. P
B) cell membrane. P
C) nucleoid.
D) nucleus.
E) ribosomes.
2. A major change occurring in the evolution of eukaryotes from prokaryotes was the
P P P P P P P P P P P P
development of:
P P
A) DNA.
B) photosynthetic capability. P
C) plasma membranes. P
D) ribosomes.
E) the nucleus. P
3. In eukaryotes, the nucleus is enclosed by a double membrane called the:
P P P P P P P P P P P
A) cell membrane. P
B) nuclear envelope. P
C) nucleolus.
D) nucleoplasm.
E) nucleosome.
4. The dimensions of living cells are limited, on the lower end by the minimum number of
P P P P P P P P P P P P P P P
biomolecules necessary for function, and on the upper end by the rate of diffusion of
P P P P P P P P P P P P P P P
solutes such as oxygen. Except for highly elongated cells, they usually have lengths and
P P P P P P P P P P P P P P
diameters in the range of:
P P P P P
A) 0.1 m to 10 m. P P P P
B) 0.3 m to 30 m. P P P P
C) 0.3 m to 100 m. P P P P
D) 1 m to 100 m.
P P P P
E) 1 m to 300 m.
P P P P
5. Which group of single-celled microorganisms has many members found growing in
P P P P P P P P P P
extreme environments?
P P
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) None of the answers is correct. P P P P P
Page 1 P
, 6. The bacterium E. coli requires simple organic molecules for growth and energy—it is
P P P P P P P P P P P P
therefore a:
P P
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.
7. Which is a list of organelles?
P P P P P
A) mitochondria, chromatin, endoplasmic reticulum P P P
B) peroxisomes, lysosomes, plasma membrane P P P
C) proteasomes, peroxisomes, lysosomes P P
D) mitochondria, endoplasmic reticulum, peroxisomes P P P
E) All of the answers are correct.
P P P P P
8. Which list has the cellular components arranged in order of INCREASING size?
P P P P P P P P P P P
A) amino acid < protein < mitochondrion < ribosome
P P P P P P P
B) amino acid < protein < ribosome < mitochondrion
P P P P P P P
C) amino acid < ribosome < protein < mitochondrion
P P P P P P P
D) protein < amino acid < mitochondrion < ribosome
P P P P P P P
E) protein < ribosome < mitochondrion < amino acid
P P P P P P P
9. The three-dimensional structure of macromolecules is formed and maintained primarily
P P P P P P P P P
through noncovalent interactions. Which one of the following is NOT considered a
P P P P P P P P P P P P
noncovalent interaction?
P P
A) carbon-carbon bonds P
B) hydrogen bonds P
C) hydrophobic interactions P
D) ionic interactions P
E) van der Waals interactions
P P P
10. Which element is NOT among the four most abundant in living organisms?
P P P P P P P P P P P
A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus
Page 2 P
, 11. The four covalent bonds in methane (CH4) are arranged around carbon to give which
P P P P P P P P P P P P P
geometry?
P
A) linear
B) tetrahedral
C) trigonal bipyramidal P
D) trigonal planar P
E) trigonal pyramidal P
12. What functional groups are present on this molecule?
P P P P P P P
A) ether and aldehyde
P P
B) hydroxyl and aldehyde P P
C) hydroxyl and carboxylic acidP P P
D) hydroxyl and ester P P
E) hydroxyl and ketone P P
13. The macromolecules that serve in the storage and transmission of genetic information
P P P P P P P P P P P
are:
P
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleic acids. P
E) proteins.
14. Stereoisomers that are nonsuperimposable mirror images of each other are known as:
P P P P P P P P P P P
A) anomers.
B) cis-trans isomers. P
C) diastereoisomers.
D) enantiomers.
E) geometric isomers. P
15. The catalog of all proteins functioning in a cell is the:
P P P P P P P P P P
A) metabolome.
B) proteasome.
C) lysosome.
D) proteome.
E) genome.
Page 3 P
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