Cell Structure and Function

What are proteins called when they are associated with non-protein molecules like carbohydrates or lipids?

• Simple proteins
• Conjugated proteins
• Enzymatic proteins
• Fibrous proteins

How many different types of amino acids are commonly found in proteins?

• Ten
• Fifteen
• Twenty
• Twenty-five

What type of bond joins amino acids to form proteins?

• Hydrogen bond
• Ionic bond
• Peptide bond
• Glycosidic bond

What is the significance of water in the protoplasm of a cell?

• It stores genetic information
• It synthesizes proteins
• It provides mechanical strength only
• It is a major constituent and medium for metabolic reactions

What happens to the nucleolus during early cell division?

• It duplicates
• It becomes larger
• It moves to the cell membrane
• It disappears