What are the base-pairing rules for DNA?
a. A-G, T-C
b. A-C, T-G
c. A-U, C-G
d. A-T, G-C
e. A-T, G-U
d
Biology & Microbiology
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When an infectious disease cannot spread in a population because it lacks a significant number of susceptible hosts, the phenomenon is referred to as
A. protected population. B. active immunity. C. passive immunity. D. herd immunity.
Biology & Microbiology
Which of the following is the last structure that urine
passes through? a. distal tubule b. urethra c. urinary bladder d. ureter e. loop of Henle
Biology & Microbiology
What structure divides the eye into anterior and posterior chambers?
A. lens.
B. retina.
C. cornea.
D. iris.
E. optic disc.
Biology & Microbiology
Which of the following is lowest in unsaturated fats?
A) beef B) salmon C) corn oil D) canola oil
Biology & Microbiology