Which of the following affects the acid-base balance of extracellular fluid?
a. kidneys only
b. respiratory system only
c. all of the choices
d. buffering systems only
c
Biology & Microbiology
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Oxygen is toxic to
A) obligate anaerobes. B) obligate aerobes. C) cancer cells. D) facultative organisms. E) All of the above.
Biology & Microbiology
Small tubes that carry urine from the renal pelvis to the bladder are called
A. urethras. B. the distal convoluted tubules. C. the collecting ducts. D. the ureters. E. the renal corpuscles.
Biology & Microbiology
A group of whales is called a
a. harem. b. pod. c. covey. d. herd. e. bevy.
Biology & Microbiology
Which insect in the accompanying figure represents a group that parasitizes plants?
a. 1 b. 2 c. 3 d. 4 e. 5
Biology & Microbiology