There are how many different types of amino acids?

a. 5
b. 10
c. 15
d. 20
e. 50


ANSWER: d

Biology & Microbiology

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Squalene is produced by the ____ of sharks

a. kidneys b. heart c. livers d. muscle e. gall bladder

Biology & Microbiology

Classes of lipids include all of the following except

a. phospholipids. b. fats. c. waxes. d. carbohydrates. e. steroids.

Biology & Microbiology

When a person exercises, sensory input from moving muscles and joints results in an increase in cardiac output, causing blood pressure to be maintained, despite an increase in blood flow to the muscles

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following statements best describe the way molecules move across a plasma membrane?

A. Lipid molecules do not pass through the plasma membrane easily. B. Charged molecules pass through the plasma membrane easily. C. Large molecules pass through the plasma membrane easily. D. Small, uncharged molecules pass through the plasma membrane easily. E. Water and gas molecules require "helper" proteins to move through the plasma membrane.

Biology & Microbiology