Answer:
Animals and plants need nitrogen to build amino acids in proteins, which are the building blocks of life. Unlike oxygen, nitrogen cannot be absorbed directly from the air by animals and plants.
Explanation:
Answer:
Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.
Explanation:
PLS MAKE ME AS BRAINLIST
Answer:
A zygote can end up with one fewer chromosome than normal because one of the fertilizing gametes was missing a chromosome. This deletion, called nondisjunction, happened while the gamete was forming.
Explanation:
<span>It is important that the phospholipid bilayer is both hydrophobic in the surface and hydrophilic inside to control and manage the incoming organic compounds mainly water from exceeding the needed amount or destablizing the concentration established by the cells. </span>
<span>Hydrophilic is a characteristic of an object which is attracted to water or can synthesize with water. In contrast to hydrophobic like fats, oils and lipis which has a strong aversion and dislike to water molecules. </span>
Transmembrane proteins are found in the plasma membrane. Hydrophilicregions are embedded <span>within the membrane, and Hydrophobic regions project from both surfaces of the bilayer. </span><span>
Approximately 20-80% of the cell membrane is composed of lipids, the rest, is made up of protein. The lipid layer of the membrane gives it flexible and permeable characteristic. While the protein part assists in transport of molecules it needs to survive.<span>
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Answer:
They are neutrophils, eosinophils, basophils, lymphocytes, and monocytes.
Out of these ones the T-cells are responsible for recognizing antigens on the surface.
Explanation:
T cells
Killer T cells
Killer or cytotoxic T cells scan the surface of cells in the body to see if they have become infected with germs, or if they have turned cancerous. If so, they kill these cells.
Helper T cells
Helper T cells "help" other cells in the immune system to start and control the immune response against foreign substances.
Regulatory T cells or Tregs
Tregs control or suppress other cells in the immune system. They have both helpful and harmful effects.
Memory T cells
Natural killer T cells
