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klemol [59]
3 years ago
15

Describe the major steps of cell fractionation and centrifugation and explain why they are useful techniques

Biology
1 answer:
nalin [4]3 years ago
5 0
Naguara chamo tú quieres que te hagan la tarea si eres arrecho
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In the male reproductive system, the pituitary hormone _____ stimulates Leydig cells to secrete testosterone, and the pituitary
Katena32 [7]

Answer:

<u>Luteinizing hormone </u>(LH) stimulates Leydig cells to secrete testosterone

<u>Follicle stimulating hormone (FSH)</u> stimulates Sertoli cells to secrete protein and other molecules required for spermatogenesis

Explanation:

Under the influence of gonadotropin-releasing hormone, the anterior pituitary releases luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In males, LH stimulates interstitial cells of testes (Leydig cell) to secrete the hormone testosterone. FSH acts indirectly to stimulate spermatogenesis by causing the release of androgen-binding protein (ABP) from the Sertoli cells. The function of ABP is to maintain the higher concentrations of testosterone to stimulate the final steps of spermatogenesis in the seminiferous tubules.

6 0
3 years ago
What causes large amounts of air to move?
timofeeve [1]

Answer:

There is a term "atmospheric circulation". It is when the air throughout the globe moves around. When the sun heats air near the equator more, and less at the poles. So the equator is warmer. The warm air near the equator moves either towards the south or the north, toward the poles. The warm air also rises up, and the cold air sinks. This is convection, but at a global scale. THis is also the cause of wind.

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2 years ago
Scientific knowledge is based on evidence. Where do scientists acquire evidence?
Ber [7]

Answer:

Explanation:

Scientists collect their evidence through experimentation and/or observation.

6 0
3 years ago
What limits the size of the cell?
nadezda [96]
Yea what that person said
7 0
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!!!!!!!!!!!!!!!
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C

Explanation:

Hope this helped! -Sierra<3

7 0
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