Which of the following characteristics is not associated with nemerteans?

A. presence of a true coelomic space, the rhynchocoel
B. blood vessels
C. a heart
D. a proboscis
E. a tube-within-a-tube body plan


C

Biology & Microbiology

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Four of the five chemicals listed below are

hydrogen acceptors. Select the EXCEPTION.

a. oxygen b. water c. NADP+ d. NAD+ e. FAD

Biology & Microbiology

Explain the meaning and utility of RNA interference

What will be an ideal response?

Biology & Microbiology

How does the central dogma serve as the basis of modern genetics?

Drag the terms on the left to the appropriate blanks on the right to complete the sentences.

Biology & Microbiology

The yeast Candida albicans does not normally cause disease because of

A) symbiotic bacteria. B) antagonistic bacteria. C) parasitic bacteria. D) commensal bacteria. E) other fungi.

Biology & Microbiology