The forward thrust of swimming stingrays is created by:

a. the pectoral fins.
b. the pelvic fins.
c. the dorsal fin.
d. the caudal fin.
e. the anal fin.


A

Biology & Microbiology

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Scientists have learned the full extent of viral abundance on earth because

A. a wide variety of microbes is available to act as hosts for these viruses. B. metagenomic sequencing has identified viruses in a broad variety of environments. C. the final step of the viral life cycle, release of mature viruses and cell lysis, releases millions of viruses. D. viruses are known to grow on all life forms: animal, plant, fungi, and bacteria.

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Which type of molecule is ricin?

a. protein b. lipid c. nucleic acid d. carbohydrate e. mineral

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Describe and diagram the various zones and provinces in the ocean. What adaptations to these variable conditions are

seen in the biota that inhabit these regions? What will be an ideal response?

Biology & Microbiology

Two noncellular agents, smaller than viruses, are the infectious proteins called ________, and the infectious RNA strands called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology