B and T cells are two kinds of _______ formed in bone marrow.

a. lymphocytes
b. interferons
c. antibodies
d. effector cells


a. lymphocytes

B and T cells are two kinds of lymphocytes formed in bone marrow.

Biology & Microbiology

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As a person goes from rest to full-effort exercise, there is an increase in the _____

A) tidal volume B) vital capacity C) residual volume D) total lung capacity

Biology & Microbiology

As oxygen appeared in the atmosphere, ________ also accumulated, which formed a protective barrier that protects the Earth from ________

A) ozone / UV radiation B) elemental sulfur / volcanism C) ferrous iron / hydroxylating radicals D) sulfate / hydrogen sulfide

Biology & Microbiology

Group members of ________ are particularly abundant in the oceans, chemoorganotrophic, and often produce pigments when grown on complex media

A) Alteromonas B) Flavobacteriales C) Pelagibacter D) Prochlorococcus

Biology & Microbiology

Dispersal can benefit an organism by reducing its chance of inbreeding

a. true b. false

Biology & Microbiology