What form of nitrogen can most plants absorb and use directly?

A) nitrite and nitrate
B) nitrate only
C) ammonium and nitrogen gas
D) nitrate and ammonium


Answer: D) nitrate and ammonium

Biology & Microbiology

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Beta interferon is used to treat

a. herpes infections. b. multiple sclerosis. c. measles. d. mumps. e. hepatitis C.

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A(n) ________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis

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dCas9 is a useful tool in the CRISPER-Cas toolkit because it can ________

A) fluoresce and help researchers locate target sequences B) deactivate the transcription of a gene C) bind DNA, but it cannot travel down the template strand D) bind DNA, but it cannot cut DNA

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Which of the following is the CORRECT sequence of steps for beer preparation?

A. mashing, malting, fermentation, clarification, aging B. malting, mashing, adding hops, fermentation, aging C. mashing, malting, fermenting, aging, clarification D. malting, fermenting, adding hops, clarification, aging

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