DNA is composed of building blocks called _____.
Fill in the blank(s) with the appropriate word(s).
Answer: Nucleotides
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Among the organisms listed here, which are thought to be the closest relatives of fungi?
A) animals B) vascular plants C) mosses D) brown algae E) slime molds
In a chemical reaction, if the reactants have more energy than the products, ____
a. there will be a net release of energy b. there will be a net loss of energy c. the activation energy will be very high d. the activation energy will be very low e. more bonds were made than were broken
Uracil can pair with
a. ribose. b. adenine. c. cytosine. d. thymine. e. guanine.
The lectin pathway for complement action is initiated by
A) mannose on host membranes. B) mannose on the surface of microbes. C) lectins of the microbe. D) gram-negative cell walls. E) gram-positive cell walls.