The plasma membrane is composed of ____

a. water and salts
b. proteins
c. nucleic acids
d. primarily phospholipids
e. proteins and carbohydrates


ANSWER: d

Biology & Microbiology

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Amino acids are assembled within the cells to form:

a. nucleic acids. b. triglycerides. c. phospholipids. d. polypeptides. e. DNA.

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__________ are jawless fishes with a backbone. Fill in the blank(s) with the appropriate word(s)

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What component of the cell is the site of polypeptide assembly?

a. nucleus b. mitochondria c. vesicles d. ribosome e. lysosome

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