Proteins and Enzymes Assessment

What is the primary function of collagen in the human body?

• Transports oxygen in blood

• Holds skin, tendons, muscles, and bones together

• Catalyzes chemical reactions

• Stores energy for cells

What percentage of the body's total protein is made up of collagen?

• 15%

• 20%

• 25%

• 30%

What is the basic building block (monomer) of proteins?

• Glucose

• Nucleotides

• Peptides

• Amino acids

Which type of bond connects amino acids together in a protein chain?

• Hydrogen bonds

• Ionic bonds

• Peptide bonds

• Van der Waals forces

How many distinct parts does an amino acid structure have?

• Two

• Three

• Four

• Five

Which protein structure level represents the sequence of amino acids bonded together?

• Secondary structure

• Tertiary structure

• Primary structure

• Quaternary structure

What are the two common secondary structure patterns in proteins?

• Alpha helix and beta sheets

• Coils and loops

• Strands and chains

• Globular and fibrous

Which category of proteins is characterized by being round and water-soluble?

• Fibrous proteins

• Structural proteins

• Globular proteins

• Membrane proteins

What is the process called when a protein loses its shape and function?

• Degradation

• Denaturation

• Dissolution

• Decomposition

Which protein is responsible for muscle contraction?

• Ferritin

• Rubisco

• Actin and Myosin

• Rhodopsin