Cell Structure and Function

Which of the following is a reducing sugar?

• Sucrose
• Cellulose
• Starch
• Maltose

What is the main difference between DNA and RNA in terms of sugar composition?

• DNA contains ribose; RNA contains deoxyribose
• DNA contains fructose; RNA contains glucose
• DNA contains deoxyribose; RNA contains ribose
• DNA contains galactose; RNA contains ribose

What is the role of transfer RNA (tRNA) in protein synthesis?

• To form ribosomes
• To carry genetic information
• To bring amino acids to the ribosome
• To catalyze DNA replication

What is the secondary structure of proteins stabilized by?

• Disulfide bonds
• Ionic bonds
• Hydrophobic interactions
• Hydrogen bonds

Which vitamin acts as a coenzyme in blood clotting?

• Vitamin A
• Vitamin C
• Vitamin E
• Vitamin K