Which are the MOST dominant chemolithotrophs in pelagic waters?

A) ammonia-oxidizing Archaea
B) ammonia-oxidizing Bacteria
C) sulfate-reducing Bacteria
D) Prochlorococcus


Answer: A

Biology & Microbiology

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The genetic material of all living organisms is ____

a. protein b. deoxyribonucleic acid c. ribonucleic acid d. glycoprotein e. polypeptide

Biology & Microbiology

In a tropical forest some leaves are dark green and some are light green. In a population of caterpillars, homozygous

dominant dark green caterpillars thrive eating the dark green foliage, while homozygous recessive light green caterpillars thrive eating light green foliage. However, heterozygous caterpillars of an intermediate color green are easily seen by birds and eaten, thus their numbers are far less than the dominants or recessives. This is an example of ____ selection.

a. directional b. stabilizing c. disruptive d. frequent e. mutational

Biology & Microbiology

What is the process by which light energy is converted into the stored chemical energy of organic molecules?

a. diffusion b. endocytosis c. respiration d. fermentation e. photosynthesis

Biology & Microbiology

Vitamins that are acquired from fat-containing foods are known as 

A. lipo-vitamins. B. coenzymes. C. fat-soluble vitamins. D. essential vitamins.

Biology & Microbiology