Ionized ammonia applied to soil is effectively retained because clays in the soil have a charge that is ________.
A. uncharged
B. negative
C. positive
D. None of these are correct.
Answer: B
Biology & Microbiology
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Integration of Mu DNA into the host genome is essential for
A) lytic growth. B) lysogenic growth. C) both lytic and lysogenic growth. D) neither lytic nor lysogenic growth.
Biology & Microbiology
There is a network of blood vessels covering the surface of the retina through which light must pass to
reach the rods and cones of the eye.
Indicate whether the statement is true or false.
Biology & Microbiology
Which molecule is translated into an amino acid sequence?
A. Transfer RNA B. Primer RNA C. Ribosomal RNA D. Messenger RNA E. Ribozymes
Biology & Microbiology
The Montreal Protocol banned use of _____ , which contribute(s) to ozone depletion
a. DDT b. CFCs c. fossil fuels d. sulfur dioxides
Biology & Microbiology