Proteins produced by the immune system in response to the presence of an antigen are known as ________

Fill in the blank(s) with correct word


antibodies

Biology & Microbiology

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In pine trees the megaspores develop within a(n) ____

a. sporopollenin b. ovule c. seed d. strobilus e. pollen grain

Biology & Microbiology

Which two structures of the human digestive tract can be classified as endocrine glands since they

produce hormones?

a. liver and gallbladder b. liver and pancreas c. liver and small intestine d. pancreas and small intestine e. pancreas and stomach

Biology & Microbiology

All cells have some characteristics in common; both prokaryotic and eukaryotic cells have

A) a nucleus and a cell membrane B) DNA and a cell membrane C) cytoplasm, a plasma membrane, and a nucleus D) cytoplasm, a plasma membrane, and DNA E) a cell membrane and cytoplasm

Biology & Microbiology

The pentose phosphate pathway is important in the production of

a. pentose sugars. b. NADPH. c. glucose. d. pentose sugars and NADPH.

Biology & Microbiology