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