Likely representative of some of the earliest bacteria, what do we call prokaryotes that are capable of harnessing the energy from sunlight to drive the synthesis of organic compounds from CO2?

a. phototrophs
b. anaerobes
c. extremophiles
d. halophiles


a. phototrophs

Biology & Microbiology

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Which of the following adversely affects the ozone layer?

A. oil B. plastics C. coal and natural gas D. greenhouse gases E. chlorofluorocarbons

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Which of the following is an application for metagenomics?

a. identifying new species b. determining drug safety c. developing new energy sources d. increasing agricultural production

Biology & Microbiology

Land plants are composed of all of the following tissue types except

a. mesodermal. b. epidermal. c. meristematic. d. vascular. e. ground tissue.

Biology & Microbiology

All types of internal fertilization require

A. specialized anatomical structures. B. transfer of a spermatophore to the female reproductive tract. C. a terrestrial environment. D. a penis in the male.

Biology & Microbiology