Page 1 of 7
lehninger principles of biochemistry, 7th
edition(chapter 1)
the dimensions of living cells are limited, on the lower end by the minimum number of biomolecules
necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. except
for highly elongated cells, they usually have lengths and diameters in the range of: - answer-0.3 m to 100
m.
which group of single-celled micro-organisms has many members found growing in extreme
environments? - answer-archaea
the bacterium e. coli requires simple organic molecules for growth and energy—it is therefore a: -
answer-chemoheterotroph
in a bacterial cell, the dna is in the: - answer-nucleoid
a major change occurring in the evolution of eukaryotes from prokaryotes was the development of: -
answer-the nucleus
in eukaryotes, the nucleus is enclosed by a double membrane called the: - answer-nuclear envelope
which one of the following has the cellular components arranged in order of increasing size?
a) amino acid < protein < mitochondrion < ribosome
b) amino acid < protein < ribosome < mitochondrion
c) amino acid < ribosome < protein < mitochondrion
d) protein < amino acid < mitochondrion < ribosome
e) protein < ribosome < mitochondrion < amino acid - answer-b
the three-dimensional structure of macromolecules is formed and maintained primarily through
noncovalent interactions. which one of the following is not considered a noncovalent interaction?
, Page 2 of 7
a) carbon-carbon bonds
b) hydrogen bonds
c) hydrophobic interactions
d) ionic interactions
e) van der waals interactions - answer-a) carbon-carbon bonds
which one of the following is not among the four most abundant elements in living organisms?
a) carbon
b) hydrogen
c) nitrogen
d) oxygen
e) phosphorus - answer-e) phosphorus
the four covalent bonds in methane (ch4) are arranged around carbon to give which one of the following
geometries?
a) linear
b) tetrahedral
c) trigonal bipyramidal
d) trigonal planar
e) trigonal pyramidal - answer-b) tetrahedral
the macromolecules that serve in the storage and transmission of genetic information are: - answer-
nucleic acids
stereoisomers that are nonsuperimposable mirror images of each other are known as: - answer-
enantiomers
lehninger principles of biochemistry, 7th
edition(chapter 1)
the dimensions of living cells are limited, on the lower end by the minimum number of biomolecules
necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. except
for highly elongated cells, they usually have lengths and diameters in the range of: - answer-0.3 m to 100
m.
which group of single-celled micro-organisms has many members found growing in extreme
environments? - answer-archaea
the bacterium e. coli requires simple organic molecules for growth and energy—it is therefore a: -
answer-chemoheterotroph
in a bacterial cell, the dna is in the: - answer-nucleoid
a major change occurring in the evolution of eukaryotes from prokaryotes was the development of: -
answer-the nucleus
in eukaryotes, the nucleus is enclosed by a double membrane called the: - answer-nuclear envelope
which one of the following has the cellular components arranged in order of increasing size?
a) amino acid < protein < mitochondrion < ribosome
b) amino acid < protein < ribosome < mitochondrion
c) amino acid < ribosome < protein < mitochondrion
d) protein < amino acid < mitochondrion < ribosome
e) protein < ribosome < mitochondrion < amino acid - answer-b
the three-dimensional structure of macromolecules is formed and maintained primarily through
noncovalent interactions. which one of the following is not considered a noncovalent interaction?
, Page 2 of 7
a) carbon-carbon bonds
b) hydrogen bonds
c) hydrophobic interactions
d) ionic interactions
e) van der waals interactions - answer-a) carbon-carbon bonds
which one of the following is not among the four most abundant elements in living organisms?
a) carbon
b) hydrogen
c) nitrogen
d) oxygen
e) phosphorus - answer-e) phosphorus
the four covalent bonds in methane (ch4) are arranged around carbon to give which one of the following
geometries?
a) linear
b) tetrahedral
c) trigonal bipyramidal
d) trigonal planar
e) trigonal pyramidal - answer-b) tetrahedral
the macromolecules that serve in the storage and transmission of genetic information are: - answer-
nucleic acids
stereoisomers that are nonsuperimposable mirror images of each other are known as: - answer-
enantiomers
