Test Bank for Lehninger Principles of Biochemistry
8th Edition by David L. Nelson 9781319228002 |
Complete Guide A+
,1. In a bacterial cell, the DNA is in the:
x x x x x x x x
A) cell envelope. x
B) cell membrane. x
C) nucleoid.
D) nucleus.
E) ribosomes.
2. A major change occurring in the evolution of eukaryotes from prokaryotes was the
x x x x x x x x x x x x
development of: x
A) DNA.
B) photosynthetic capability. x
C) plasma membranes. x
D) ribosomes.
E) the nucleus. x
3. In eukaryotes, the nucleus is enclosed by a double membrane called the:
x x x x x x x x x x x
A) cell membrane. x
B) nuclear envelope. x
C) nucleolus.
D) nucleoplasm.
E) nucleosome.
4. The dimensions of living cells are limited, on the lower end by the minimum number of
x x x x x x x x x x x x x x x x
biomolecules necessary for function, and on the upper end by the rate of diffusion of
x x x x x x x x x x x x x x x
solutes such as oxygen. Except for highly elongated cells, they usually have lengths
x x x x x x x x x x x x x
anddiameters in the range of:
x x x x x x
A) 0.1 m to 10 m.
xx x x x x x
B) 0.3 m to 30 m. x x x x
C) 0.3 m to 100 m. x x x x
D) 1 m to 100 m.
xx x x x x x
E) 1 m to 300 m. x x x x
5. Which group of single-celled microorganisms has many members found growing in
x x x x x x x x x x
extreme environments? x
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) None of the answers is correct. x x x x x
Page 1 x
, 6. The bacterium E. coli requires simple organic molecules for growth and energyóit is
x x x x x x x x x x x x
therefore a: x
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.
7. Which is a list of organelles?
x x x x x
A) mitochondria, chromatin, endoplasmic reticulum x x x
B) peroxisomes, lysosomes, plasma membrane x x x
C) proteasomes, peroxisomes, lysosomes x x
D) mitochondria, endoplasmic reticulum, peroxisomes x x x
E) All of the answers are correct.
x x x x x
8. Which list has the cellular components arranged in order of INCREASING size?
x x x x x x x x x x x
A) amino acid < protein < mitochondrion < ribosome
x x x x x x x
B) amino acid < protein < ribosome < mitochondrion
x x x x x x x
C) amino acid < ribosome < protein < mitochondrion
x x x x x x x
D) protein < amino acid < mitochondrion < ribosome
x x x x x x x
E) protein < ribosome < mitochondrion < amino acid
x x x x x x x
9. The three-dimensional structure of macromolecules is formed and maintained primarily
x x x x x x x x x
through noncovalent interactions. Which one of the following is NOT considered a
x x x xx x x x x x x x x
noncovalent interaction? x
A) carbon-carbon bonds x
B) hydrogen bonds x
C) hydrophobic interactions x
D) ionic interactions x
E) van der Waals interactions
x x x
10. Which element is NOT among the four most abundant in living organisms?
x x x x x x x x x x x
A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus
Page 2 x
, 11. The four covalent bonds in methane (CH4) are arranged around carbon to give which
x x x x x x x x x x x x x
geometry?
x
A) linear
B) tetrahedral
C) trigonal bipyramidal x
D) trigonal planar x
E) trigonal pyramidal x
12. What functional groups are present on this molecule?
x x x x x x x
A) ether and aldehyde
x x
B) hydroxyl and aldehyde x x
C) hydroxyl and carboxylic acid
x x x
D) hydroxyl and ester x x
E) hydroxyl and ketone x x
13. The macromolecules that serve in the storage and transmission of genetic information
x x x x x x x x x x x
are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleic acids. x
E) proteins.
14. Stereoisomers that are nonsuperimposable mirror images of each other are known as:
x x x x x x x x x x x
A) anomers.
B) cis-trans isomers. x
C) diastereoisomers.
D) enantiomers.
E) geometric isomers. x
Page 3 x
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