Unit 1: Biochemistry
Biochemistry Review 1
Directions: Complete the questions below to the best of your abilities in preparation for TOMORROW’S QUIZ.
I suggest first attempting these questions without the help of your text or notes, and then checking your work.
1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom
by A) hydrogen bonds.
B) nonpolar covalent bonds.
C) polar covalent bonds. D)
ionic bonds.
2) A chemist wishes to make an organic molecule less acidic. Which of the following functional groups
should be added to the molecule in order to do so?
A) amino B) hydroxyl C) carboxyl D) carbonyl E) phosphate
3) Water molecules are able to form hydrogen bonds with
A) compounds that have polar covalent bonds. B) oils. C) oxygen gas (O2) molecules.
D) any compound that is not soluble in water. E) chloride ions.
4) Which of the following are nitrogenous bases of the purine type?
A) guanine and adenine B) cytosine and uracil C) thymine and guanine
D) ribose and deoxyribose E) adenine and thymine
5) What is the name of the functional group shown in the figure below?
A) carbonyl B) ketone C) aldehyde D) carboxyl E) hydroxyl
Figure 5.7
6) The structure depicted in Figure 5.7 shows the A) 1-4
linkage of the α glucose monomers of starch. B) 1-4
linkage of the β glucose monomers of cellulose. C) double-
helical structure of a DNA molecule.
D) α helix secondary structure of a polypeptide.
E) β pleated sheet secondary structure of a polypeptide.
Biochemistry Review 1
Directions: Complete the questions below to the best of your abilities in preparation for TOMORROW’S QUIZ.
I suggest first attempting these questions without the help of your text or notes, and then checking your work.
1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom
by A) hydrogen bonds.
B) nonpolar covalent bonds.
C) polar covalent bonds. D)
ionic bonds.
2) A chemist wishes to make an organic molecule less acidic. Which of the following functional groups
should be added to the molecule in order to do so?
A) amino B) hydroxyl C) carboxyl D) carbonyl E) phosphate
3) Water molecules are able to form hydrogen bonds with
A) compounds that have polar covalent bonds. B) oils. C) oxygen gas (O2) molecules.
D) any compound that is not soluble in water. E) chloride ions.
4) Which of the following are nitrogenous bases of the purine type?
A) guanine and adenine B) cytosine and uracil C) thymine and guanine
D) ribose and deoxyribose E) adenine and thymine
5) What is the name of the functional group shown in the figure below?
A) carbonyl B) ketone C) aldehyde D) carboxyl E) hydroxyl
Figure 5.7
6) The structure depicted in Figure 5.7 shows the A) 1-4
linkage of the α glucose monomers of starch. B) 1-4
linkage of the β glucose monomers of cellulose. C) double-
helical structure of a DNA molecule.
D) α helix secondary structure of a polypeptide.
E) β pleated sheet secondary structure of a polypeptide.
