Plasmids occur naturally in:

A. bacteria
B. viruses
C. animal cells
D. plant cells


Ans: A. bacteria

Biology & Microbiology

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Which of the following correctly lists the types of cellular communication from shortest to longest distance travelled by the signaling molecule to reach its responding cell?

A. paracrine, autocrine, endocrine B. autocrine, endocrine, paracrine C. autocrine, paracrine, endocrine D. endocrine, paracrine, autocrine

Biology & Microbiology

Which of the following are the mechanoreceptors that detect motion and sense gravity?

A. baroreceptors B. stereocilia C. hair cells D. semicircular canals

Biology & Microbiology

What DNA site can increase the transcription rate of a gene that may be thousands of base pairs away?

a. transcription factor b. silencer c. enhancer d. activator e. transcription increaser

Biology & Microbiology

The sugar-phosphate backbone of the DNA is held together by hydrogen bonds

1.True 2.False

Biology & Microbiology