Which structure in the accompanying figure represents the nitrogenous waste urea?



a. 1

b. 2

c. 3

d. 4


d

Biology & Microbiology

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Briefly explain the iron-sulfur world hypothesis and identify two pieces of evidence that support this

hypothesis. What will be an ideal response?

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The stimulus for contractions of the uterus to bring about birth is the hormone 

A. estrogen. B. follicle stimulating hormone. C. oxytocin. D. luteotropic hormone.

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How does the central dogma describe the flow of information of gene expression?

a. as RNA DNA protein b. as protein RNA DNA c. as DNA RNA protein d. as protein DNA RNA

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In seed plants the entire male gametophyte is transported to the female.

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

Biology & Microbiology