POSTLAB QUESTIONS 1. What type of biochemical compound constitutes hair? a. When

Question

POSTLAB QUESTIONS 1. What type of biochemical compound constitutes hair? a. When hair is permed, what types of bonds are broken? b. When hair is reset, what types of bonds are formed? What does boiling water do to the protein of any bacteria that might be present? 2. 3. What are the end products of the digestion of protein? Why must insulin be injected, and not taken by mouth? a. b. A person eats mushrooms because he hears that they contain "enzymes that are good for you." What is the end product of digesting mushroom proteins? Soluble salts of lead (Pb), mercury (Hg), arsenic (As), and other heavy metals are poisonous. What type of chemicals in your body do they destroy? 4. a. If you swallow soluble lead(II) nitrate, Pb(NO)2 the first step in a possible rem- edy is to drink milk or eat raw egg. What chemical in these foods reacts with the metal? b. What is the second step in the remedy? Explain 5. When nitric acid, HNO, touches your skin, a yellow spot develops. What does the spot indicate?

Explanation / Answer

1. The main constituents of human air are proteins. 91% of human hair is protein.

a.Perming breaks the disulphide bonds between the keratin protein molecules present in hair with the help of oxidising agents

b.When hir are reset, broken disulphide bonds are reformed again.

2. At high temperatures protein denatures and will precipitate.

3. End product of digestion of proteins are amino acids, which are building blocks of proteins.

a. Because digestive enzymes present in stomach and intestine will break down it before reaching to the bloodstream to do it's job.

b. Amino acids.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.