E. coli contains about _______ different tRNAs that code for _______ different amino acids.
a. 62; 40
b. 62; 20
c. 50; 20
d. 40; 20
Ans: d. 40; 20
You might also like to view...
Pseudomonads are aerobic, gram-positive, polar flagellated, bacillus-shaped cells
Indicate whether the statement is true or false.
The division of microbes termed the Firmicutes have a cell wall type best described as ________.
A. gram-negative B. gram-positive C. archaeal D. lacking a cell wall
The operation of natural selection depends upon the
fact that a. the strong always survive, whereas the weak always die. b. some individuals have a better chance to produce more offspring. c. mutations are always harmful. d. acquired characteristics are inherited. e. reproduction of all members of a species is virtually the same.
Which of the following statements accurately reflects the process of glycolysis?
A. Glycolysis uses molecular oxygen; however, it occurs in anaerobic environments. B. Glycolysis uses no molecular oxygen; however, it can occur in aerobic environments. C. Glycolysis uses no molecular oxygen and occurs in the mitochondria. D. Glycolysis uses molecular oxygen and occurs in aerobic environments.