Question

1. Which statements about viruses are true? Select all that apply.

A. Viruses are ultramicroscopic cells.

B. Viruses are infectious particles with a protein coat surrounding the nucleic acid.

C. Bacteriophages are viruses that can also infect the animal cells infected by the bacteria.

D. Viruses are nonliving.

E. Viruses are not living.

2. The touch-me-not plant, Mimosa pudica, is a weed with compound leaves that fold inward and droop when touched or disturbed. The leaves then open a few minutes later. Which theme common to all of life is evident in this phenomenon?

A. The plant is synthesizing and conserving its energy when it closes its leaves.

B. The intrinsic order in the leaves is evident in the closing of the leaves.

C. The plant is responding to stimulus by closing its leaves in an attempt to protect itself.

D. The plant is preparing to reproduce.

3. What would be considered a monophyletic taxon in this phylogenetic tree?

Paraphyletic group Common ancestor of even-toed ungulates Other even-toed ungulates Hippopotamuses Cetaceans Seals Bears Bears Other carnivores Polyphyletic group © 2017 Pearson Education, Inc.

A. other carnivores, bears, and seals

B. other carnivores, bears, seals, and their common ancestor

C. other even-toed ungulates, hippopotamuses, cetaceans, and seals

D. other carnivores, bears, and their common ancestor

Answer 1

1. Which statements about viruses are true? Select all that apply.

Answer- A. Viruses are ultramicroscopic cells.

B. Viruses are infectious particles with a protein coat surrounding the nucleic acid.

D. Viruses are nonliving.

E. Viruses are not living

Viruses are smaller than bacteria and acellular.

Viruses that infect bacteria are called bacteriophage.

Viruses are nonliving but once they they enter a cell they are considered living.

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