Which genus contains the nitrogen-fixing bacteria that live in legume nodules?
A) Bacillus
B) Escherichia
C) Rhizobium
D) Vibrio
Ans: C) Rhizobium
Biology & Microbiology
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Which of the following is a mechanism of aminoglycosides?
A) inhibition of cell wall biosynthesis B) prevention of peptidoglycan crosslinking C) inhibition of DNA replication D) targeting the 30S ribosomal subunit
Biology & Microbiology
Common nekton include
a. tuna. b. billfish. c. jelly fish. d. both a and b e. both b and c
Biology & Microbiology
Which of the following describes a trophoblast?
a. the outer layer of blastocyst cells b. a combination of Z and W chromosomes c. the inner layer of blastocyst cells d. a fertilized egg retained in the female
Biology & Microbiology
transcription ends when RNA polymerase reaches a
What will be an ideal response?
Biology & Microbiology