Which of the following tree stands would you predict has the highest NPP?

A) 0-1 years old
B) 1-10 years old
C) 30-60 years old
D) over 100 years old


C

Biology & Microbiology

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A common source of cholera infection is

A. acid rain. B. unpasteurized milk. C. fecal contaminated material, especially water. D. boiled water. E. acid rain AND boiled water.

Biology & Microbiology

Effector helper T cells release cytokines only

when which of the following occur?

a. The effector helper T cell binds to an antigen-presenting dendritic cell. b. The effector helper T cell binds to a memory T cell. c. The effector helper T cell binds to a complement protein. d. The effector helper T cell binds to MHCantigen complexes on B cells. e. Any of these can stimulate cytokine production.

Biology & Microbiology

Nematodes and rotifers have a body cavity that is

a. called a coelom. b. called a pseudocoelom. c. completely lined by tissues derived from mesoderm. d. both a and c.

Biology & Microbiology

Which type of RNA is used as a template for translation of proteins?

A. messenger RNA B. micro RNA C. transfer RNA D. ribosomal RNA

Biology & Microbiology