Which organisms accomplish most of the work of converting atmospheric nitrogen into a form usable to green plants?

A) protists B) bacteria and archaea
C) viruses D) fungi


Answer: B

Biology & Microbiology

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The shaft of a long bone is also known as:

A. the diaphysis. B. the epiphysis. C. trabeculae. D. the long bone wall.

Biology & Microbiology

Allosteric enzymes

A. may bind two substrates. B. are used to bind to other enzymes. C. have an additional binding site that is involved in regulating enzyme activity. D. are twice as fast as single-site enzymes. E. may bind two substrates AND are twice as fast as single-site enzymes.

Biology & Microbiology

Which of the following is associated with rough ER?

A) Plasma membrane B) Ribosomes C) Chlorophyll D) DNA E) Lipid synthesis

Biology & Microbiology

Where is the checkpoint that assesses the DNA for damage?

a. G1 b. G2 c. S d. M

Biology & Microbiology