You discover a new particle. It has only RNA as a nucleic acid and lacks both a membrane and cytoplasm. This particle is a(n)

A) virus. B) archaea. C) prion. D) fungus. E) bacteria.


A

Biology & Microbiology

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Protein A has a strong affinity for

A) antigen. B) blood. C) protein. D) antibody.

Biology & Microbiology

Individuals considered at greatest risk for contracting brucellosis are:

a. dairy farmers. b. fishermen. c. prison guards. d. those working with exotic birds.

Biology & Microbiology

What process refers to dramatic phenotypic changes that sometimes occur in evolution, such as the

appearance of feathered wings during the evolution of birds? a. paedomorphosis b. gradualism c. macroevolution d. allopolyploidy e. microevolution

Biology & Microbiology

Cells naturally, without using energy, respond to changes in water concentration through the process of

a. facilitated diffusion. b. osmosis. c. phagocytosis. d. active transport.

Biology & Microbiology