A beta turn consists of ______________ amino acid(s)

A. one
B. two
C. three
D. four
E a variable number of


D

Biology & Microbiology

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Which of the following is not a form of passive transport?

A. Facilitated diffusion B. Diffusion C. Osmosis D. All of the above are forms of passive transport

Biology & Microbiology

Which one of these mollusk groups can be classified as suspension feeders?

A) bivalves B) gastropods C) chitons D) cephalopods

Biology & Microbiology

Required for protein synthesis and operation of stomata. 

  Choose the letter of the best match: A. nitrogen B. calcium C. potassium D. phosphorus E. magnesium

Biology & Microbiology

What was the original purpose of sexual reproduction?

A. to become better adapted to a given environment B. to form more complex organisms C. to repair damaged DNA D. All of the choices are correct.

Biology & Microbiology