The right answer is D because the molecules move from a low concentration to a high concentration.
The sodium-potassium pump is responsible for maintaining hydric balance in the body, the contraction of striated and smooth muscles, the maintenance of blood pressure and the transmission of nerve impulses in neurons. For this purpose, this protein transports sodium ions outside a cell and introduces potassium ions, using the energy of ATP degradation. The cell is then depolarized. The protein is particularly active during physical exertion.
The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
Answer:
DNA helicase
Explanation:
DNA helicase unwinds the DNA strands by breaking the hydrogen bonds down at the center of the strand. this process begins in the replication fork of the DNA strand
CO2 can enter through many ways such as
1) Coal emissions from factories
2) The decomposition of living organisms
3) The breathing out of animals
4) Waste and animal waste
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