Laboratory simulations provide indirect evidence that organic compounds such as __________ and

__________ self-assemble spontaneously under conditions like those thought to have prevailed on the
early Earth. Fill in the blank(s) with the appropriate word(s).


amino acids; nucleotides

Biology & Microbiology

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The situation in which an active regulatory protein "turns on" gene expression is an example of

A) feedback inhibition. B) positive control. C) negative control. D) constitutive gene elements. E) a mutation.

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Which of the following conditions is identified by the release of histamine and serotonin?

a. ragweed hypersensitivity b. HIV/AIDS c. rheumatoid arthritis d. dermatitis

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The amateur scientist (Koch/Leeuwenhoek/Pasteur) made his own microscopes and first reported the existence of microbes

What will be an ideal response?

Biology & Microbiology

What are some of the problems that must be addressed when planting C3 plants in hot, arid climates

for ornamental purposes?

What will be an ideal response?

Biology & Microbiology