Answer:
Hydrochloric acid contributes to protein digestion by supplying H+ which activates pepsinogen, the precursor to pepsin. Pepsinogen is secreted by chief cells in the gastric glands of the body and antrum of the stomach
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Answer: Van der Waals forces
Explanation:
Van der Waals forces are weak intermolecular forces that depend on the distance between two particles. They are caused by correlations in the change in polarization between two nearby particles. To put it in other words, when a particle changes its polarization (becomes more positive on one end and more negative on the other), so does the adjacent particle, and the next one, and so on. This causes these particles to stick together weakly.
The tiny "hairs" increase the surface area of the gecko's feet in contact with the wall, which makes the bond stronger and allows it to support all of its weight.
Because experiments have shown that geckos stick well to both hydrophobic and hydrophilic surfaces, we can assume there aren't any hydrogen bonds present.
Ionic bonds can't be present either because geckos wouldn't stick to electrically neutral surfaces, as these bonds require charged molecules.
The existence of land bridges was used to dispute continental drift
Answer:
energy
Explanation:
because the substance moves from a low to high concentration
Answer:
"AIDS-symptomatic"
Explanation:
According to my research on studies done by medical professionals, the condition characterized in the question happens when a person is "AIDS-symptomatic". AIDS causes the immune system to become deficient (destroyed) an leaves the body vulnerable. Therefore any small infection or illness can become life-threatening. The number 1 cause of death for people with AIDS is Pneumonia
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