Which of the following molecules act as building blocks (monomers) of polypeptides?

A) 1, 4, and 6
B) 2, 7, and 8
C) 7, 8, and 13
D) 11, 12, and 13
E) 12, 13, and 15


Answer: B

Biology & Microbiology

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a. insulin b. glucagon c. adenyl cyclase d. cyclic AMP e. G protein

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Mitochondrial inner membrane transmembrane proteins are inserted into the inner membrane

a. directly from the matrix into the lipid bilayer. b. through Tim. c. through Tim and Tom. d. through a transporter called Oxa1.

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In poultry, the genes for rose comb (R) and pea comb (P) produce walnut whenever they occur together (R__ P__); single-combed individuals have the homozygous condition for both genes (rr pp). Give the phenotypic results of a cross of Rr Pp x rr Pp

A. 9/16 walnut, 3/16 rose, 3–16 pea, 1/16 single B. 3/8 walnut, 3/8 pea, 1/8 rose, 1/8 single C. 3/4 walnut, 1/4 rose D. 1/4 walnut, 1/4 rose, 1/4 pea, 1/4 single E. 1/4 walnut, 1/4 rose, 1/4 pea, 1/4 single

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________ is an important component of many biological molecules, including the genetic material DNA and energy transfer molecules such as ATP

Fill in the blank(s) with correct word

Biology & Microbiology