Which of the following represents Echinoderm sexual reproductive strategy?

a. budding
b. binary fission
c. dioecious with external fertilization
d. monoecious with internal fertilization


c. dioecious with external fertilization

Biology & Microbiology

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Chemotherapeutic agents that are chemically modified natural products of microorganisms are most specifically referred to as ________.

A. semisynthetic drugs B. antimicrobial agents C. antibiotics D. synthetic drugs

Biology & Microbiology

A scientist is searching for chemical compounds involved in embryonic limb development. He discovers a new compound that is transiently expressed in the limb, and only seems to affect cells in its immediate vicinity (up to a few cell lengths away)

How should the scientist classify this chemical compound? A. as an amine hormone B. as a peptide hormone C. as a steroid hormone D. as a paracrine factor E. as a neurotransmitter

Biology & Microbiology

Some vertebrates like frogs and humans do not have a conspicuous tail, yet even humans have the remnants of one known as the

A. sacrum. B. lumbar. C. fundus. D. coccyx.

Biology & Microbiology

Photosynthesis Evald before eukaryotic cells

a. true b. false

Biology & Microbiology