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

Page 1 of 648
xt xt xt

, 1




I
Page 1
xt

,1. In a bacterial cell, the DNA is in the:
xt xt xt xt xt xt xt xt


A) cell envelope. xt


B) cell membrane. xt


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


2. A major change occurring in the evolution of eukaryotes from prokaryotes was the
xt xt xt xt xt xt xt xt xt xt xt xt xt


development of: xt


A) DNA.
B) photosynthetic capability. xt


C) plasma membranes. xt


D) ribosomes.
E) the nucleus. xt




3. In eukaryotes, the nucleus is enclosed by a double membrane called the:
xt xt xt xt xt xt xt xt xt xt xt


A) cell membrane. xt


B) nuclear envelope. xt


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


4. The dimensions of living cells are limited, on the lower end by the minimum number of
xt xt xt xt xt xt xt xt xt xt xt xt xt xt xt xt


biomolecules necessary for function, and on the upper end by the rate of diffusion of s
xt xt xt xt xt xt xt xt xt xt xt xt xt xt xt


olutes such as oxygen. Except for highly elongated cells, they usually have lengths and d
xt xt xt xt xt xt xt xt xt xt xt xt xt xt


iameters in the range of:
xt xt xt xt


A) 0.1 m to 10 m. xt xt xt xt


B) 0.3 m to 30 m. xt xt xt xt


C) 0.3 m to 100 m. xt xt xt xt


D) 1 m to 100 m.
xt xt xt xt


E) 1 m to 300 m.
xt xt xt xt




5. Which group of single-
xt xt xt


celled microorganisms has many members found growing in extreme environments
xt xt xt xt xt xt xt xt xt


?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) None of the answers is correct.
xt xt xt xt xt




Page 2 xt

, 2


6. The bacterium E. coli requires simple organic molecules for growth and energy—
xt xt xt xt xt xt xt xt xt xt xt


it is therefore a:
xt xt xt


A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. Which is a list of organelles?
xt xt xt xt xt


A) mitochondria, chromatin, endoplasmic reticulum xt xt xt


B) peroxisomes, lysosomes, plasma membrane xt xt xt


C) proteasomes, peroxisomes, lysosomes xt xt


D) mitochondria, endoplasmic reticulum, peroxisomes xt xt xt


E) All of the answers are correct.
xt xt xt xt xt




8. Which list has the cellular components arranged in order of INCREASING size?
xt xt xt xt xt xt xt xt xt xt xt


A) amino acid < protein < mitochondrion < ribosome
xt xt xt xt xt xt xt


B) amino acid < protein < ribosome < mitochondrion
xt xt xt xt xt xt xt


C) amino acid < ribosome < protein < mitochondrion
xt xt xt xt xt xt xt


D) protein < amino acid < mitochondrion < ribosome
xt xt xt xt xt xt xt


E) protein < ribosome < mitochondrion < amino acid
xt xt xt xt xt xt xt




9. The three-
xt


dimensional structure of macromolecules is formed and maintained primarily through n
xt xt xt xt xt xt xt xt xt xt


oncovalent interactions. Which one of the following is NOT considered a noncovalent
xt xt xt xt xt xt xt xt xt xt xt xt


interaction?
A) carbon-carbon bonds xt


B) hydrogen bonds xt


C) hydrophobic interactions xt


D) ionic interactions xt


E) van der Waals interactions
xt xt xt




10. Which element is NOT among the four most abundant in living organisms?
xt xt xt xt xt xt xt xt xt xt xt


A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus




Page 3 xt