Biochem Review

Buffers are substances which

• A. make your blood shiny

• B. release OH- in acidic solutions to lower the pH

• C. donate H+ in basic solutions and accept H+ in acidic solutions to minimize pH changes

• D. are strong acid- strong base pairs

• E. cause acid rain in the Adirondacks

Which of the following illustrates hydrolysis?

• A. the reaction of 2 monosaccharides to form a disaccharide with the release of water

• B. the synthesis of 2 amino acids to form a dipepetide

• C. the reaction of fat to form glycerol and fatty acids with the release of water

• D. the reaction of fat to form glycerol and fatty acids with the utilization of water

• E. the synthesis of a nucleotide with the production of a water molecule

Acidic; donates H+ and becomes negatively charged; found in amino acids

• a. –OH

• b. –COOH

• c. –NH₂

• d. –SH

Involved in the strongest interaction in tertiary structure within proteins.

• a. –OH

• b. –COOH

• c. –NH₂

• d. –SH

Can be linked together to form a dipeptide

• 
• 
• 
• 
• 

Steroid

• 
• 
• 
• 
• 

Which bonds are created during the formation of the primary structure of a protein?

• a. peptide bonds

• b. hydrogen bonds

• c. disulfide bonds

• d. only a and c are correct

• e. a, b, and c are correct

Why is ATP an important molecule in metabolism?

• A. acts as a catalyst

• B. releases ribose electrons to drive reactions

• C. It energizes other molecules by transferring phosphate groups

• D. Hydrolysis of its phosphate groups is endergonic

• E. releasing heat upon hydrolysis

Butane and Methyl-propane are

• a. geometric isomers

• b. structural isomers

• c. alcohols

• d. enantiomers

The following graphs depict the effect of pH on the activity of enzymes. Enzymes with their highest activity at an alkaline (basic) pH are represented by which of the following graphs?

• I only

• II only

• III only

• I and III only

• I and IV only