The correct option is D.
Parietal cells are the epithelial cells which secrete hydrochloric acid and intrinsic factors. The cells are located in the gastric glands which are found in the linings of the walls of the stomach. The hydrochloric acid produced by the parietal cells helps in the conversion of the enzyme pepsinogen to pepsin during the digestion process.
Answer 1.- Well a duck is still a bird. So it has hollow bones that makes its body lighter.It eats insects, worms amphibians and plants, so it's an omnivore.2. It has hollow bones, it has an oily coating that prevents any water from settling in its duck feathers. 3. Feature no. 1-Makes body lighter so it's easier to swim, Feature 2- oily coating prevents water from getting into the feathers, preventing any water being absorbed into their bodies.
Explanation:
Answer:
Denaturation.
Explanation:
Denaturation may be defined as the process at which the proteins are placed at the unfavorable environment. The proteins are treated at high temperature, pressure and the in the presence of different chemicals.
The high temperature changes the three dimensional shape of the protein and unfold the native state of the protein. This result in the loss of the biological activity of the protein. Renaturation of protein is possible only if the primary structure of the protein is not destroyed.
Thus, the correct answer is option (3).
