This gas traps 20 times the heat that carbon dioxide does
A) oxygen B) methane C) nitrogen D) argon
Answer: B
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At equilibrium, the concentrations of the reactants equals that of the products
Indicate whether the statement is true or false.
The left side of the heart contains which of the following?
a. pulmonary artery b. tricuspid valve c. oxygenated blood d. deoxygenated blood
The internal pH of most cells is near neutral. This allows
a. water to break down into H+ and OH-. b. enzymes within the cells to act at peak efficiency. c. the buffers produced within the body to affect these cells. d. enzymes outside of these cells to function. e. rapid fluctuations between acidic and basic conditions within the cells.
In meiosis DNA replicates during
A. prophase I. B. prophase II. C. interphase prior to meiosis II. D. interphase prior to meiosis I. E. both prophase I and prophase II.