What type of bond holds amino acids together in a protein?
a) Ionic bond
b) Covalent bond
c) Peptide bond
d) Hydrogen bond
Answer: c) Peptide bond

Which enzyme is responsible for breaking down starches into sugars?
a) Lipase
b) Protease
c) Amylase
d) Nuclease
Answer: c) Amylase

Which of the following is a lipid?
a) Starch
b) Cholesterol
c) Hemoglobin
d) DNA
Answer: b) Cholesterol

The sugar found in RNA is:
a) Glucose
b) Deoxyribose
c) Ribose
d) Fructose
Answer: c) Ribose

Which process is responsible for synthesizing proteins?
a) Glycolysis
b) Translation
c) Photosynthesis
d) Replication
Answer: b) Translation

The building blocks of nucleic acids are:
a) Amino acids
b) Fatty acids
c) Nucleotides
d) Monosaccharides
Answer: c) Nucleotides

Enzymes speed up chemical reactions by:
a) Raising the activation energy
b) Lowering the activation energy
c) Consuming ATP
d) Breaking down DNA
Answer: b) Lowering the activation energy

Which of the following is a structural carbohydrate in plants?
a) Glucose
b) Starch
c) Cellulose
d) Glycogen
Answer: c) Cellulose

Which molecule is known as the “universal solvent”?
a) Oxygen
b) Water
c) Carbon dioxide
d) Sodium chloride
Answer: b) Water

Which of the following is not a function of proteins?
a) Enzyme catalysis
b) Energy storage
c) Structural support
d) Transport of molecules
Answer: b) Energy storage