Answer:
C.
Explanation:
An isotonic solution causes the blood cell to let in water and release some at the same rate.
- enzyme pepsin: chemically digests the proteins in the food, breaking down into amino acids
- hydrochloric acid (strong acid): provides an acid environment for pepsin and kills bacteria (food); without this acid, the stomach could not function properly.
The intestinal villi crypts will make a wave area on the intestine wall so it will broaden the surface area of intestine. When the surface area of intestine become broader, intestine will absorb more food.
Answer:
Explanation:
The body's most important nonspecific defense is the skin, because it acts as a physical barrier to keep pathogens out. Even openings in the skin (such as the mouth and eyes) are protected by saliva, mucus, and tears, which contain an enzyme that breaks down bacterial cell walls.
Answer:
The correct answer will be option-D
Explanation:
Uterine tube or oviduct or the fallopian tubes are the long, narrow tube in the abdominal cavity of the female reproductive system.
The uterine tube help transport the sperms to reach the ovum, It connects the ovary to the uterus and provides the suitable medium for the fertilization to occur.
The fertilization does not take place in the uterus and the ovary but in the uterine tubes.
The fertilization does not take place just after 15 minutes of sexual intercourse as the sperms get killed in the cervical canal and the once which remains alive is transported by the uterine contractions which start after 30 minutes.
Thus, option-D is the correct answer.
