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Varvara68 [4.7K]
2 years ago
5

Water (H2O), carbon dioxide (CO2), and oxygen (O2) are all quite small molecules, yet they move across cell membranes differentl

y. Both CO2 and O2 passively diffuse across the cell membrane directly while H2O moves across the cell membrane by facilitated diffusion. What can be concluded about these three molecules based on the way they react to the cell membrane
Biology
1 answer:
pickupchik [31]2 years ago
4 0

Answer:

Explanation:

picture

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Describe what is happening during the female monthly cycle related to:
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All women have to go through what is known as the menstrual cycle. This process allows a woman to be able to prepare for, and conceive, a baby, and carry him/her to full term. As such, there are a series of steps that the female body takes, both physically and physiologically, spurred by the rise and fall of hormones, to ensure the smoothness of the process and the possibility of conception.

The cycle is divided into 4 stages: the menstrual, the follicular, the ovulating, and the luteal stage. Each of them has a play of hormones that will play their part in helping the process be successful. These hormones are: FSH (Follicle Stimulating Hormone released by the Pituitary gland), LH (Luteinizing Hormone, also released by the Pituitary), estrogens, progesterone, and in the case of a pregnancy, hCG (Human Chorionic Gonadotropin, or the pregnancy hormone).

So, as to the question, the play of hormones, and how the cycle develops, would be like this:

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3. Ovulating, or ovulation phase: As the maturation of the egg continues, the follicles get ready to release it into the fallopian tubes. As this happens, the Pituitary, stimulated by the rising levels of estrogens and progesterones, and by the work of the hypothalamus, releases LH, which will play a part not only in the final maturation of the egg, and the lining, but also in maintaining the levels of estrogen and progesterone so that a pregnancy is successful. At this point, the egg is released by the follicle and the process down the tube begins towards the uterus. It is here that pregnancy can take place.

4. Luteal phase: The follicle that releases the egg, becomes later on the corpus luteum, which will further produce estrogen and especially progesterone, to maintain the lining once the fertilized egg has implanted. If not, it will be reabsorbed and the declining levels of hormones will signal the body to initiate the menstrual phase.

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