A DNA specimen that contains 30% guanine has ________ thymine.
A. 15%
B. 20%
C. 30%
D. 60%
E. The amount of thymine cannot be determined.
B. 20%
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What is the minimum number of phage that can initiate the development of a plaque in a bacterial lawn?
A. 25 B. 10 C. 1 D. 5
Which statement concerning radioisotope 14C is
false? a. It can be substituted for 12C in glucose and the body will still be able to use the compound. b. It has a different number of protons than 12C. c. It has more neutrons than 12C. d. It behaves the same chemically as 12C. e. It has six carbons and eight neutrons.
The brain stores large amounts of information for hours, days, or years. This type of memory is called ________
Fill in the blank(s) with correct word
If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?
a. protein synthesis b. DNA synthesis c. movement d. energy storage e. active transport