The formation of soil by gradually breaking rock into smaller particles by biological, chemical, and physical processes
is known as:
a. erosion.
b. inorganic synthesis.
c. cation exchange.
d. salinization.
e. weathering.
e
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Answer the following statements true (T) or false (F)
1. All tissues are composed of cells. 2. The capacity to maintain a fairly constant body temperature is a homeostatic process. 3. A community is composed of different populations of animals and plants. 4. A defining characteristic that distinguishes prokaryotic and eukaryotic organisms is the lack of cell structure in one versus the other.
What can be assumed from these results?
In the Ames test, mutagenicity is normally tested on a strain of bacterium (Salmonella typhimurium) that cannot synthesize the amino acid histidine. Therefore, these bacteria require histidine in the growth plate to survive. A researcher performs the Ames test to evaluate the mutagenicity of a newly synthesized compound and notices that Salmonella typhimurium is living on a histidine-free growth plate. A. The newly synthesized compound induces a mutation in the bacteria. B. The bacteria no longer produce histidine. C. The bacteria produce histidine. D. The newly synthesized compound induces a mutation in the bacteria and the bacteria no longer produce histidine. E. The newly synthesized compound induces a mutation in the bacteria and the bacteria produce histidine.
What specific type of P-type ATPase pumps H+ to acidify the stomach and is inhibited by proton pump inhibitor drugs used to treat excess stomach acid?
A) type 1 B) type 2 C) type 3 D) type 4 E) type 5
Red light has a longer wavelength than blue light. Will red light have a higher or lower energy content than blue light?
a) higher b) lower