The term obligate refers to

A) The ability to exist in a wide range of conditions
B) Using light for energy production
C) Using oxygen for metabolism
D) Using chemicals for energy production
E) Existing in a very narrow niche


E) Existing in a very narrow niche

Biology & Microbiology

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A pine tree is

a. an angiosperm. b. a haploid plant body. c. a sporophyte. d. the dependent stage in the conifer life cycle. e. all of these.

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The main nitrogenous waste of adult amphibians is:

a. ammonia. b. urea. c. uric acid. d. peptides. e. purines

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Light consists of units of energy called

A. electrons. B. calories. C. neutrons. D. photons. E. pigments.

Biology & Microbiology

The purple sulfur bacteria carry out oxygenic photosynthesis

Indicate whether the statement is true or false

Biology & Microbiology