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arlik [135]
3 years ago
14

If a person is heterozygous for the sickle-cell allele, they are protected from both malaria and sickle-cell anemia. this is cal

led:
Biology
1 answer:
drek231 [11]3 years ago
5 0

Answer:

non-lodge-kins-limphomia

Explanation:

i got the answer right.

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How does the heat content of a substance affect the way it flows
pogonyaev
I think this helps idk.

4 0
3 years ago
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The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucro
DaniilM [7]

Answer:

The correct answer to the question is: the level of liquid in Side A will rise.

Explanation:

  • Sucrose is formed of two molecules of glucose but the membrane is impermeable to it.
  • The given membrane is said to be permeable to water and glucose.
  • Through a semi-permeable membrane, molecules tend to move from a region where its concentration is high to another region where its concentration is low by the process of diffusion until its concentration in the two regions becomes equal. This phenomenon is known as Osmosis.
  • Concentration gradient of a molecule can be defined as the difference in the concentration of the molecule in two different regions separated by a semi-permeable membrane.
  • Considering glucose, the concentration of glucose is low in side A (1M) and high in side B (2M), so it will tend to move from side B to side A down its concentration gradient.
  • Considering sucrose, although its concentration is high in side A (2M) but low in side B (1M), it is unable to move as the membrane is impermeable to it.
  • Water tend to move from a region where the concentration of solute is low (or water concentration is high) to a region where the concentration of solute is high (or water concentration is low).
  • Due to the movement of glucose from side B to side A, the concentration of total solute concentration becomes high in side A as compared to side B. Therefore, water would move from side B to side A.
  • Hence the level of liquid in Side A will rise after sometime.

3 0
3 years ago
Over the course of the semester, I have detailed many of the environmental problems that face us today. I have also told you abo
sveta [45]

Answer:

Waste disposal

Why? Contributes to the greenhouse effect and causes pollution

Solution: If you bring your lunch to school, package it in reusable containers instead of disposable ones. Carry food in reusable plastic or cloth bags, and bring drinks in a thermos instead of disposable bottles or cartons.

Solution: Compost leftover food

Hope this helps

5 0
4 years ago
Which lanes sample produced the fewest fragments of DNA?
aliina [53]

Lane A.

The smallest fragments of DNA will be witnessed near the bottom of the gel, on the other hand, the heavier fragments will be visible at the top. The theory behind this is there is a specific pore size on the basis of the concentration of acrylamide/agarose in the gel.


5 0
3 years ago
Need answer very quickly please!!!
prisoha [69]

Answer:

They provide the body with energy.

Explanation:

7 0
3 years ago
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