Choose one of the two topics. Write an essay with introduction, thesis, three body paragraphs with topic sentences, and conclusion. Edit your writing before you submit. Why do people get married young (under 20 years old)? OR What are the effects of technology on children?

Only achiral amino acid is called……….

In sickle cell anemia, the basis of the malfunction of the hemoglobin molecule is: A)     substitution of a single amino acid B)     faulty binding of the heme groups C)    reduced affinity for oxygen D)    insufficient iron in the diet

In sickle cell anemia, the basis of the malfunction of the hemoglobin molecule is insufficient iron in the diet

When an enzyme is subjected to temperatures above the optimum, it denatures. Which of the following bonds are the first to be disrupted by high temperatures? A)    disulfide B)     hydrogen C)     ionic D)    peptide  

When binding with oxygen, what type of binding curve does hemoglobin have? A) Linear B) Hyperbolic C) Sigmodial D) None of them

Which one of the following compounds is a by-product of peptide bond formation? A) phosphate ion        B) bicarbonate               C) water                       D) carboxylic acid

 In a highly basic solution, pH = 13, the dominant form of glycine is: A) NH2—CH2—COOH B) NH2—CH2—COO- C) NH2—+CH3—COO- D) +NH3—CH2—COOH E)  + NH3—CH2—COO-

Identify each of the amino acids in the polypeptide and then name it using the three character abbreviations.

If an individual’s blood has a slightly lower pH than normal, this means that oxygen affinity to hemoglobin __________. A) Remains the same because only carbon dioxide levels can affect affinity B) Remains the same because only oxygen levels can affect affinity C) Increases D) Decreases