When dimethylsulfoniopropionate (DMSP) is aerobically degraded in a marine environment, which product is most often used to support growth?

A) acrylate
B) dimethyl disulfide
C) dimethyl sulfoxide
D) methanethiol


Answer: A

Biology & Microbiology

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Drosophila (fruit flies) usually have long wings (+) but mutations in two different genes can result in bent wings (bt) or vestigial wings (vg). If a homozygous bent wing fly is mated with a homozygous vestigial wing fly, which of the following offspring would you expect?

A) All +bt +vg heterozygotes B) 1/2 bent and 1/2 vestigial flies C) All homozygous + flies D) 3/4 bent to 1/4 vestigial ratio E) 1/2 bent and vestigial to 1/2 normal

Biology & Microbiology

Most of the Earth’s phosphorous is in the form

of

a. phosphoric acid. b. elemental phosphorous. c. phosphate. d. phosphorous cations. e. carbonate

Biology & Microbiology

Which of the following is a genetic mutation that affects males more than females?

A. nearsightedness B. red-green color blindness C. farsightedness D. astigmatism E. blindness

Biology & Microbiology

The genetic code is expressed differently in bacterial and archaeal cells than in eukaryotic cells.

Answer the following statement true (T) or false (F)

Biology & Microbiology