Quiz on DNA and RNA

What is the main structural difference between DNA and RNA as depicted in the image?

• DNA is a single strand, RNA is a double helix.

• DNA is a double helix, RNA is a single strand.

• Both DNA and RNA are double helices.

• Both DNA and RNA are single strands.

Which of the following is a characteristic of fibrous proteins?

• They include enzymes and antibodies.

• They make up the subunits of microtubules.

• They are composed of long peptide chains woven together to form fibers.

• They are primarily involved in metabolic processes.

What is keratin primarily found in?

• Enzymes and antibodies

• Scales, horns, wool, nails, and feathers

• Subunits of microtubules

• Blood plasma

Which type of protein includes enzymes and antibodies?

• Fibrous proteins

• Structural proteins

• Globular proteins

• Membrane proteins

What is the primary structural difference in hemoglobin that leads to sickle cell disease?

• A change in the primary structure from Glu to Val at position 6

• A change in the primary structure from Val to Glu at position 6

• A change in the primary structure from His to Pro at position 3

• A change in the primary structure from Thr to Leu at position 4

Tags

NGSS.HS-LS3-2

How does sickle-cell hemoglobin affect the function of red blood cells?

• Molecules do not associate with one another; each carries oxygen.

• Molecules interact and crystallize into a fiber; capacity to carry oxygen is greatly reduced.

• Molecules increase the oxygen-carrying capacity.

• Molecules dissolve in the bloodstream, increasing oxygen delivery.

What is the shape of red blood cells affected by sickle cell disease?

• Round and flexible

• Oval and rigid

• Sickle-shaped and rigid

• Square and flexible

What assists in the proper folding of proteins?

• Enzymes

• Lipids

• Chaperonins

• Carbohydrates

What is the challenge in correlating primary structure to final 3D form of proteins?

• It is straightforward

• It is complex

• It is unnecessary

• It is irrelevant

What do most proteins undergo on their way to their final stable shape?

• No changes

• Several intermediate structures

• Immediate folding

• Degradation