Nearly everyone appears to be infected with polyomaviruses BK and JC by the age of 15.

Answer the following statement true (T) or false (F)


True

Biology & Microbiology

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The last shared ancestor for today's cell types is thought to have arisen about _____ years ago.

A. 5 million B. 2 million C. 3 billion D. 4 billion E. 6 billion

Biology & Microbiology

Most of the water vapor in the earth's

atmosphere comes from evaporation from a. lakes. b. rivers. c. land. d. oceans. e. plants.

Biology & Microbiology

Nematodes 

A. have a pseudocoelom. B. are bilaterally symmetrical. C. have a mouth and an anus. D. All of the above are correct.

Biology & Microbiology

Which cells are connected to companion cells via plasmodesmata?

a. guard cells b. trichomes c. sieve tube members d. tracheids

Biology & Microbiology