A molecule of chlorophyll increases in potential energy when one of its electrons is boosted to a higher-energy excited state on being struck by a photon of light

a. true
b. false


Ans: a. true

Biology & Microbiology

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Which of the following are considered to be good sources of protein?

a. vegetables b. meats, nuts c. dairy products, fats

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The most common of the sexually transmitted viral diseases agents is

A. human papillomavirus. B. herpes virus. C. human immunodeficiency virus. D. leptospirosis.

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Most dinosaurs were extinct by ____ years ago

a. 10,000 b. 1 million c. 500 million d. 65 million e. 1 billion

Biology & Microbiology

When sampling a species that has clumped distributions, which approach listed below is best?

A) sampling at random locations B) counting every individual C) calculating an ecological density D) assuming a uniform distribution

Biology & Microbiology