Unit 14: Macromolecules

31. Which of the following macromolecules is the most abundant in the cell membrane?

a) Nucleic acids
b) Proteins
c) Lipids
d) Carbohydrates
Answer: c) Lipids

32. The process of converting glucose into glycogen is called:

a) Glycolysis
b) Glycogenesis
c) Gluconeogenesis
d) Glycogenolysis
Answer: b) Glycogenesis

33. The nitrogenous base adenine pairs with which base in DNA?

a) Guanine
b) Thymine
c) Cytosine
d) Uracil
Answer: b) Thymine

34. In RNA, adenine pairs with:

a) Guanine
b) Thymine
c) Cytosine
d) Uracil
Answer: d) Uracil

35. The tertiary structure of a protein is stabilized by:

a) Hydrogen bonds
b) Ionic bonds
c) Disulfide bonds
d) All of the above
Answer: d) All of the above

36. Which of the following is a structural carbohydrate found in plants?

a) Cellulose
b) Glycogen
c) Chitin
d) Starch
Answer: a) Cellulose

37. The process by which RNA is synthesized from DNA is called:

a) Translation
b) Transcription
c) Replication
d) Polymerization
Answer: b) Transcription

38. Which of the following is a function of lipids in living organisms?

a) Catalyzing chemical reactions
b) Storing energy
c) Storing genetic information
d) Forming peptide bonds
Answer: b) Storing energy

39. Which macromolecule is responsible for catalyzing biochemical reactions?

a) Lipids
b) Proteins
c) Carbohydrates
d) Nucleic acids
Answer: b) Proteins