Which of the following processes exhibit saturation (transport rate plateaus at high concentration)?
a. Simple diffusion
b. Facilitated diffusion
c. Ion channel
d. Secondary active transport
Answer: d. Secondary active transport
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Some conditions like progeria do not run in families despite being autosomal dominant. How is that
possible? What will be an ideal response?
Rigor mortis generally lasts for
a. 6?12 hours. b. 12?24 hours. c. 24?36 hours. d. 24?60 hours. e. one week.
Which hormone is synthesized by and acts on the stomach?
a. gastrin b. somatostatin c. CCK d. secretin e. GIP
In any DNA molecule, the number of guanine bases will:
A) always be equal to the number of thymine bases. B) always be equal to the number of adenine bases. C) always be equal to the number of cytosine bases. D) sometimes be equal to the number of thymine bases and will sometimes be equal to the number of adenine bases. E) sometimes be equal to the number of cytosine bases and will sometimes be equal to the number of adenine bases.