Which structure is normally on the 5' end of a DNA strand?
A. nitrogenous base
B. hydroxyl group
C. sulfur group
D. phosphate group
Ans: D. phosphate group
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Andrew is studying bone development and calcium absorption in elephants. Which vitamin is
likely an important component of his study?
a. vitamin D b. vitamin A c. vitamin K d. vitamin B
Which type of ion channel is shown in this illustration?
a. voltage sensitive ion channel
b. light sensitive ion channel
c. mechanosensitive ion channel
d. temperature sensitive ion channel
During which phase of aerobic respiration is FADH2 produced?
a. glycolysis b. ethanol production c. acetyl-CoA formation d. the Krebs cycle e. glycolysis and the Krebs cycle
If you are cast up on a desert island with no fresh
water to drink, the level of which of the following will rise in your bloodstream in an effort to conserve water? a. erythropoietin b. oxytocin c. insulin d. antidiuretic hormone e. glucose