The individuality of an organism is determined by the the organism's
a. amino acids
b. nitrogen bases
c. DNA base sequence
d. order of ribosomes
Ans: c. DNA base sequence
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During a two week course of antibiotics, bacteria can go through over ____ generations
a. 100 b. 500 c. 1000 d. 10,000 e. 1,000,000
The apparatus consisting of microtubules that directs chromosome movement during cell division is
called the a. spindle. b. centriole. c. histone. d. centromere. e. cleavage furrows.
What am I? I am structurally related to aspirin, and I help defend plants against insect attack
a. systemin b. jasmonates c. brassinosteroids d. methyl salicylate e. oligosaccharins
Which of the following would happen to an individual playing a long game of basketball outdoors on a hot afternoon?
a. The production of thyroxin by the thyroid gland would decrease. b. The osmotic pressure of the blood would decrease. c. The volume of urine produced would increase. d. The concentration of urea in the urine would decrease. e. The secretion of antidiuretic hormone from the pituitary gland would increase.