Understanding Protein Structure and Function

What is the primary role of chaperone proteins in cells?

• To degrade misfolded proteins

• To assist in the folding of proteins into their normal shapes

• To transport proteins across cell membranes

• To synthesize new proteins

Which of the following diseases is associated with defects in chaperone proteins?

• Diabetes

• Alzheimer disease

• Hypertension

• Asthma

What are prions?

• Normal proteins that assist in cellular metabolism

• Misfolded proteins implicated in brain diseases

• Enzymes that catalyze protein synthesis

• Lipids that form cell membranes

How do prions affect other proteins?

• They enhance the function of other proteins

• They cause other proteins to fold the wrong way

• They break down other proteins into amino acids

• They stabilize the structure of other proteins

What are nucleic acids composed of?

• Amino acids

• Fatty acids

• Nucleotides

• Monosaccharides

Which of the following is NOT a function of chaperone proteins?

• Assisting in protein folding

• Correcting misfolded proteins

• Synthesizing nucleic acids

• Preventing aggregation of proteins

What is the significance of protein folding in biological systems?

• It determines the protein's function

• It increases the protein's solubility

• It decreases the protein's molecular weight

• It enhances the protein's color

Which of the following is a characteristic of fibrous proteins?

• They are soluble in water

• They have a structural role in cells

• They act as enzymes

• They are involved in cell signaling

What is the relationship between prions and Transmissible Spongiform Encephalopathy (TSE)?

• Prions are a treatment for TSE

• Prions are a cause of TSE

• Prions are unrelated to TSE

• Prions are a symptom of TSE

Which structure of protein includes beta pleated sheets?

• Primary

• Secondary

• Tertiary

• Quaternary