Describe the differences between DNA and RNA.
What will be an ideal response?
DNA is a double-stranded nucleic acid, with the bases adenine, thymine, guanine, and cytosine. It has the sugar deoxyribose. RNA is single-stranded, with the bases adenine, uracil, guanine, and cytosine. It contains the sugar ribose.
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Coenzyme Q and cytochrome C:
A. transfer high-energy electrons between protein complexes of the electron transport chain. B. transfer high-energy electrons from NADH and FADH2 to protein complexes of the electron transport chain. C. transfer electrons to ATP synthase. D. transfer electrons to oxygen at the end of the electron transport chain. E. None of the answer options is correct.
Temperate zones ________
A) have the coolest climates on Earth B) have milder climates than the tropics C) are relatively dry D) are concentrated in the polar regions
The primary function of cell-mediated immunity is to
A) protect the body against extracellular parasites. B) decrease the amount of complement. C) destroy cancerous or virus-infected host cells. D) increase the number of macrophages. E) promote the production of antibodies.
The condition known as microbial antagonism may be defined as
A) microorganisms that remain with a person throughout life. B) a relationship between two organisms where one member harms the other. C) a relationship between two organisms where only one member benefits. D) an unsuccessful microbial invasion due to the presence of preexisting microbes. E) a relationship between two organisms where both members benefit.