A ________________ is a protective protein coat that surrounds the nucleic acid of the virus.

A. Capsid
B. DNA
C. Pathogen
D. Epidemic


Ans: A. Capsid

Biology & Microbiology

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The earliest RNA probably functioned in

A) catalysis. B) self-replication. C) both catalysis and self-replication. D) neither catalysis nor self-replication.

Biology & Microbiology

The evolution of prezygotic barriers to reproduction after postzygotic barriers already exist is called ____

a. species fusion b. reinforcement c. adaptive radiation d. geographic isolation e. hybridization

Biology & Microbiology

Amino acids are the building blocks for

a. proteins. b. carbohydrates. c. lipids. d. nucleic acids. e. most macromolecules.

Biology & Microbiology

Which molecules are involved in proteins synthesis?

a. rRNA, tRNA, mutagens b. transfer RNA, introns, and mutagens c. mRNA, introns, and ribosomal RNA d. mRNA, rRNA, and tRNA

Biology & Microbiology