Blog

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?

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  

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

A hydrophobic amino acid R group would be found where in a protein? A) forming a peptide bond with the next amino acid in the chain B) on the outside of the folded chain, in the water  C) on the inside of the folded chain, away from waterD) forming hydrogen bonds with other R groups E) only at one end of a protein chain

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

In any reaction catalyzed by an enzyme, the reacting molecule is called: A) substrate      B) cofactor        C) coenzyme      D) isozyme

Below titration curve is for alanine. Find the exact structure of alanine on the location points labeled with 1. 1st location: low pH 1-2.5 2nd location: pH 6-7 3rd location: pH 9-12

In the induced-fit model of enzyme action, the enzyme active site A) stays the same shape during substrate binding.  B) adjusts shape to adapt to the shape of the substrate C) stays the same shape while causing a change in the shape of the substrate. D) uses an inhibitor to adjust its shape for the substrate. E) uses a cofactor to change the shape of a substrate

What is the pI of arginine? pK1=2.83, pK2=8.99, pKR=11.49 A) 41            B) 7.16           C) 10.24           D) 10.74

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