During the first half of the menstrual cycle, GnRH stimulates the release of FSH, which stimulates the growth of follicle cells to secrete increasing levels of ________, which then stimulates the release of more GnRH, creating a positive feedback

loop.


Fill in the blank(s) with correct word


estrogen

Biology & Microbiology

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What do all of the following have in common; alveolus, villus, nephron? 

A. They are all involved in producing enzymes. B. They are all involved in exchanging materials with blood in capillaries. C. They are involved in getting things into cells. D. They have nothing in common.

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What are the structures labeled E in the accompanying figure?

A. Plasmodesmata B. Basement membranes C. Tight junctions D. Gap junctions E. Adhering junctions

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

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

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