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STALIN [3.7K]
4 years ago
11

What is the controversy around stem cells?

Biology
2 answers:
olga_2 [115]4 years ago
5 0

Answer:

The stem cell controversy is the consideration of the ethics of research involving the development, and use of human embryos. Most commonly, this controversy focuses on embryonic stem cells. Not all stem cell research involves human embryos.

Explanation:

Alecsey [184]4 years ago
4 0

Joe gay friend is going to be a good boy and he is going through the process and you know that you don’t want him and you want him two more to

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25 Points Please Help ASAP!!!! Biology Question!! At least 4 Sentences
makkiz [27]

Answer:

Root hair cell cytoplasm  // Soil water

Explanation:

Water moves through the xylem vessels in a continuous transpiration stream:

root → stem → leaf

Transpiration produces a tension or ‘pull’ on the water in the xylem vessels by the leaves. Water molecules are cohesive so water is pulled up through the plant.

The transpiration stream has several functions. These include:

transporting mineral ions

providing water to keep cells turgid in order to support the plant

providing water to leaf cells for photosynthesis

keeping the leaves cool by evaporation

Root hair cells

The root hairs are where most water absorption happens. They are long and thin so they can penetrate between soil particles, and they have a large surface area for absorption of water.

Water passes from the soil water to the root hair cell’s cytoplasm by osmosis. This happens because the soil water has a higher water potential than the root hair cell cytoplasm:

Solution Water potential Concentration of dissolved solutes

Soil water High Low

Root hair cell cytoplasm Low High

Osmosis causes water to pass into the root hair cells, through the root cortex and into the xylem vessels

8 0
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