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

Carbonic anhydrase serves to convert carbon dioxide wastes, produced from cellular respiration, into bicarbonate. This bicarbonate buffers blood pH and allows for the transport of more carbon dioxide equivalents in the blood to the kidneys for excretion. The reaction catalyzed by carbonic anhydrase is: CO2 + H2O ⇌ HCO3- + H+ How would running, as compared to walking, change the pH of the blood if breathing rate remains constant? A) Blood pH will remain the same B) Increased blood Ph C) Decreased blood pH D) None of the above

 How is the secondary structure of a protein stabilized? A) Van der wall forces B) Hydrogen bonding C) Covalent bond D) Hydrophobic bond

In the above figure, the solid line shows the dependence of the rate of an enzyme catalyzed reaction v (μmol/min) as a function of the substrate concentration [S] (mM).  Also shown (dotted line) is the dependence of the rate on substrate concentration in the presence of an inhibitor (at a concentration of 2 mM).  On the basis of the graph shown, what type of an inhibition takes place? A) Mixed inhibition B) Non-competitive inhibition C) Uncompetitive inhibition D) Competitive inhibition