1st year bio ch2

Which of the following is the monomer of proteins?

• Nucleotides
• Amino acids
• Fatty acids
• Monosaccharides

What type of bond holds two amino acids together in a protein?

• Hydrogen bond
• Ionic bond
• Peptide bond
• Disulfide bond

Which of the following is the main function of carbohydrates in living organisms?

• Store genetic information
• Store energy
• Enzyme catalysis
• Structural support

Which of the following is a type of lipid?

• Starch
• Cholesterol
• Cellulose
• Glycogen

What is the function of enzymes in biochemical reactions?

• Speed up reactions
• Slow down reactions
• Act as energy sources
• Provide structural support

Which of the following is a polysaccharide made of glucose units?

• Fructose
• Sucrose
• Starch
• Lactose

Which of the following is NOT a function of lipids?

• Energy storage
• Insulation
• Structural support in membranes
• Store genetic information

Which macromolecule is composed of nucleotides?

• Proteins
• Lipids
• Nucleic acids
• Carbohydrates

What type of bond holds together the two strands of a DNA molecule?

• Covalent bonds
• Hydrogen bonds
• Peptide bonds
• Ionic bonds

Which of the following is a primary function of nucleic acids?

• Store energy
• Carry genetic information
• Provide structural support
• Catalyze reactions