Allergy medicines relieve symptoms by dampening the effects of_________.
Fill in the blank(s) with the appropriate word(s).
histamines
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Which of the following is a product of the breakdown of lipids? Select all correct choices
A. glycerol B. NADH C. FADH2 D. Acetyl-CoA
One important aspect of self-incompatibility is to prevent:
A. expression of deleterious homozygous recessive genes B. genes that may prevent pollen germination C. factors that keep pollen from developing D. matings between different species of plants E. adherence of pollen to the stigma surface
Seventy percent alcohol is effective against
A) enveloped viruses. B) nonenveloped viruses. C) bacterial endospores. D) protozoan cysts. E) prions.
In a food chain with four trophic levels, what would be the energy in the top trophic level if the energy contained in the primary producer level is 40,000 kcal/m2/yr? Assume a trophic level transfer efficiency of 10%.
A. 4,000 kcal/m2/yr B. 40 kcal/m2/yr C. 0.4 kcal/m2/yr D. 4 kcal/m2/yr E. 400 kcal/m2/yr