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alex41 [277]
3 years ago
11

How does the endocrine system change over a period?​

Biology
1 answer:
Alika [10]3 years ago
8 0
Answer::: Brain structures called the hypothalamus and pituitary gland control the menstrual cycle. The hypothalamus triggers the pituitary gland to make hormones that trigger the ovaries to make oestrogen and progesterone. ... Disorders of the hypothalamus, pituitary gland or ovaries can affect menstruation, causing amenorrhoea
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If a gene is located in the Y chromosome could the trait ever be expressed in a female?
madreJ [45]
No because Y chromosome never occur in females
8 0
2 years ago
Plant embryos __________. a. rely on protection and resources supplied from the maternal plant. b. result from fertilization ext
Roman55 [17]

Answer:

A) rely on protection and resources supplied from the maternal plant.

Explanation:

The embryo is a structure formed after the fusion of the male gamete and female gamete. A diploid zygote is formed after cellular division forms the embryo in the female gametophyte and therefore is considered the diploid tissue.

The embryo requires the nutrients for growth and absorb them from the surrounding female gametophyte structure like endosperm in the angiosperm. The embryos grow and form the sporophytic structure.

Thus, Option-A is correct.

5 0
3 years ago
Materials are able to move across a cell membrane through one of two methods: active transport or passive transport. What is the
zloy xaker [14]
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5 0
3 years ago
Select the correct answer from each drop-down menu.
aksik [14]

Answer:

Just before the cat drops, it was stationery. Therefore it has energy of position called  potential energy.As it drops, the Gravitational potential energy is converted to Kinetic Energy,The conversion mid- air is P.E to K.E to P.E to K.E to P.E to K.E, until it touches the ground. As it touches the  ground all the energy is converted to P.E energy of position.

As it runs after mouse the P.E is converted back to Kinetic , energy of motion. As it feeds on the mouse , the chemical energy obtained  as protein from mouse meat.This is later converted back to Mechanical energy as (kinetic and Potential  energy)   in the cat.

Explanation:

4 0
3 years ago
Read 2 more answers
Anyone know this by chance ?
weeeeeb [17]
あはたさたさたさたさたさたさたさたさつみよ
4 0
3 years ago
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