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frez [133]
2 years ago
15

The hormone that stimulates milk synthesis is

Biology
1 answer:
snow_tiger [21]2 years ago
3 0

Answer: Prolactin

Explanation: During breastfeeding the anterior pituitary gland in the brain releases hormone prolactin as part of positive feedback mechanism. A mothers alveoli will collect nutrients from the blood and convert them into milk. Another hormone oxytocin, causes the muscles around the breast to eject milk (a let-down reflex) whilst a baby is sucking.

A sucking baby is actually a positive feedback that causes the brain to release more prolactin, which in turn causes the alveoli to convert more sugars and nutrients into milk.

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Drag the pink labels onto the pink targets to identify the two main phases of the cell cycle. Then drag the blue labels onto the
zavuch27 [327]

Answer:

There is no diagram provided so I will just explain the mitotic cell cycle.

Here’s a quick basic arrangement in chronological order interphase, mitosis, and finally cytokinesis.

So first you start with interphase which consist of three phases G1 phase, S phase, G2 phase. Cellular growth occurs in G1 phase of interphase this is followed by S phase which is simply when DNA replication occurs. Final this is followed by G2 phase or further growth in preparation for mitosis and/or meiosis.  

I am only going to explain mitosis but just so I don’t confuse you meiosis can also follow interphase. So mitosis consist of four phases. Prophase, metaphase, anaphase, and telophase.

Prophase: in this phase the nuclear membrane would dissipate and the chromosomes would condense.

Metaphase: then in metaphase the chromosomes would align in the center of the cell and spindle fibers or microtubules would began growth from the centrioles.  

Anaphase: by the start of this phase spindle fibers would have attached themselves to the chromosomes kinetochores. In this phase the chromatids would separate and that’s really it as you can tell this is the shortest phase in mitosis.

Telophase: finally the chromosomes would be brought to the polar opposite ends of the cell and the nuclear membrane would reform. Also the chromosomes condensed chromosomes would unravel eventually they would be invisible.

Finally the cell would enter cytokinesis were it would split at the cleavage furrow which would have started in anaphase of telophase, all a cleavage furrow is, is microfilaments “pinching the cell” which is just them pulling on either side of the center of the cell.

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C

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discharging trash into lakes and rivers create pollution

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