Multiple Choice

Question 1

Organic Molecules have a carbon backbone and _______,zx such as -OH and -NH2 that affect their chemical properties.

A) Extension Groups
B) R Groups
C) Chemical Groups
D) Functional Groups

Answer 1

D) Functional Groups

Question 2

Choose the INCORRECT statement about water molecules

A) They have polar covalent bonds
B) They dissolve non-polar molecules
C) They allow organic molecules with hydroxyl groups to be easily transported in the organism
D) Their polarity leads to the formation of hydrogen bonds

Answer 2

B) They dissolve non-polar molecules

Question 3

Which of the following reactions is a hydrolysis reaction?

A) A + H2O -> B + C
B) A + B + H2O -> C
C) A + B -> C + H2O
D) A -> B + C + H2O

Answer 3

A) A + H2O -> B+C

Question 4

Carbohydrates are polymers formed of monomer units called:

A) Amino acid
B) Monosaccharide
C) Glycerol
D) Nucleotide
E) Fatty Acid

Answer 4

B) Monosaccharide

Question 5

How many water molecules are produced during the formation of a triglyceride from fatty acids and glycerol

A) 0
B) 1
C) 2
D) 3
E) 4

Answer 5

D) 3

Question 6

Common lipids for energy storage are:

A) Steriods
B) Waxes
C) Cholesterols
D) Phospholipids
E) Triglycerides

Answer 6

E) Triglycerides

Question 7

Margarine is made by hydrogenating vegetable oils to take on the consistency of butter. What is the chemical basis for this change from a liquid to a solid?

A) Hydrogenation of fats changes them from saturated to unsaturated, which are more solid.
B) Trans fatty acids are changed from unsaturated to saturated, allowing them to solidify.
C) Hydrogenation of fats changes them from unsaturated to saturated which are more solid.
D) Trans fatty acids are changed from saturated to unsaturated, allowing them to solidfy.

Answer 7

C) Hydrogenation of fats changes them from unsaturated to saturated, which are more solid.

Question 8

Enzymes function to:

A) React with other enzymes to form a product.
B) Catalyze chemical reactions.
C) Transport molecules and ions across membranes
D) Regulate messages between cells

Answer 8

B) Catalyze chemical reactions.

Question 9

Denaturation disrupts the secondary and tertiary structure of proteins. However, denaturation is not strong enough to disrupt what interaction that is relevant to protein structure?

A) van der Waals attraction
B) Hydrogen bonds
C) Ionic bonds
D) Hydrophobic exclusion
E) Peptide bonds

Answer 9

E) Peptide bonds

Question 10

Which of the following is NOT true about both DNA and RNA:

A) They are both polymers of nucleic acids
B) DNA contains a hexose monosaccharide, while RNA has a pentose monosaccharide
C) DNA is double-stranded, while RNA is single-stranded.
D) Thymine is only found in DNA

Answer 10

B) DNA contains a hexose monosaccharide, while RNA has a pentose monosaccharide