write it in your own words:
"In humans, five days after the fertilization, the blastocyst performs zona hatching; the zona pellucida degenerates and decomposes, to be replaced by the underlying layer of trophoblastic cells. The zona pellucida is essential for oocyte growth and fertilization."
The zona pellucida supports communication between oocytes and follicle cells during oogenesis; protects oocytes, eggs, and embryos during development, and regulates interactions between ovulated eggs and free-swimming sperm during and following fertilization.
Answer:
Well, we actually evolved from a single cell organism. BUT, in this case it is
answer B
Explanation:
Answer:
Incineration: Solid pollutants are burned...
Settling: Polluted water is aloud to stand still...
Composting: Microbes are used to convert...
Gas adsorption: Pollutants are captured through contact with hard...
Explanation:
Amazing nowone else got to your question. Your welcome.
Multipotent cell
is a kind of atem cell that can only develop into cells that are closely related to the original stem cell.
<u>Explanation:</u>
Our body contains stem cells which help to regenerate or repair a particular cell or tissue during the time of need. There are different types of stem cells which provide as a life saver to the individuals to recreate the tampered organ or tissue.
The multipotent cells unlike other stem cells have specific functions only. They can develop into cells that are closely related to the original stem cell. On stimuli a multipotent blood stem cell can give rice to related cells but cannot produce a neuron or other kind of cells. Hence multipotent cells are mainly used in transplantation.
