Answer:
\rB. nutrients that are essential cannot be made by the body, so they must be obtained from food.
Explanation:
If we look at the definition of essential fatty acids, it clearly states that these are fats which human body cannot prepare but are essential for proper functioning of body. Since body cannot synthesize them on their own, therefore we must obtain them through a diet rich in them. Two main essential fatty acids are:
- Alpha-linolenic acid (omega-3)
- linoleic acid (omega-6)
They play essential functions in body sucg as :
Production of hormones
Better adrenal and thyroid activity
Regulation of inflammatory and immune responses, function and development of brain.
Supporting the development of healthy skin and hair.
Option B is the best option.
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The best answer is B (semi permeable)
The cell membrane of a red blood cell is semi permeable membrane. This is a type of biological membrane that will allow certain molecules or ions to pass through while barring others.
Red blood cells have very thin membranes that allow oxygen diffuse through quickly. They are also permeable to water and osmosis across the membrane occurs very rapidly. In the body, they are bathed in isotonic plasma in which case water movement into the cell is equal to water movement out of the cell and so the cells remain intact.
Incomplete dominance is considered to be an exception of Mendelian inheritance as neither of the alleles is completely dominant over another. The heterozygotes show the blending of traits and show a mix of both the phenotypes.
