In a DNA molecule, the amount of adenine equals the amount of ____
a. guanine
b. thymine
c. cytosine
d. uracil
e. tyrosine
ANSWER: b
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Biological food sources are broken down into the usable form of energy ___, which is a(n) _____
A. ATP; amino acid B. cAMP; nucleotide triphosphate C. ADP; nucleic acid D. glucose; carbohydrate E. ATP; nucleotide triphosphate
The scientists who proposed the operon theory are
A) Monod and Jacob. B) Watson and Crick. C) Hardy and Weinberg. D) Darwin and Mendel. E) Hershey and Chase.
Data produced by C. Bridges in the early part of this century indicate that sex in Drosophila is determined by ________
Fill in the blank(s) with correct word
For a chemical reaction to proceed spontaneously _____.
A) it must occur without an input of external energy B) the products must have less energy than the reactants C) it must take place in a very short amount of time D) the entropy must increase