Answer: They use enzymes.
Explanation:
Cells employ enzymes to drive and speed up their chemical reactions without being used up themselves. They are the only macromolecular biological catalysts that can start a reaction using the smallest available heat energy, thus overcoming the issue of needing high activation energy. Enzymes work by converting specific substrates to required product by binding them to their active site.
When the body blood sugar level decrease, the hypothalamus causes the drive to acquire food. The hypothalamus is the area of the forebrain under the thalamus that bring together both the autonomic nervous system and the action of the pituitary, directing body temperature, thirsting, starvation, sleeping and emotional doings.
<span>Older patients are more prone to a decrease in blood pressure upon standing because </span>the body is less able to adapt the BP to rapid postural changes.
When a patient standing, some of the blood come to the leg. With less blood, the heart is harder to maintain its pressure.
The body will respond with constricting the vessel or increasing heart muscle power. But in an elderly patient, this response is weaker. Some of the older patients also consume a drug that will disturb this mechanism.
Answer:
Meiosis is where a diploid cell gives rise to haploid cells, and fertilization is where two haploid cells (gametes) fuse to form a diploid zygote.
Explanation:
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