Protein Functions

Part A

This animation illustrates the functioning of a _____ protein.

To view the animation, click here. Then click on the image to start the animation.

	receptor
	contractile
	structural protein
	gene regulatory
	transport

Correct

The protein is transporting a substance across the cell membrane.

Part B

Arrow A is indicating a(n) _____ protein.

	transport
	enzyme
	signal
	structural
	receptor

Correct

The arrow is indicating a structural protein.

Part C

Arrow D is indicating a _____ protein.

	gene regulatory
	transport
	receptor
	defensive
	storage

Correct

This protein has a binding site for a signal protein and can emit a second messenger.

Part D

Which of these does NOT contain a structural protein?

	ovalbumin
	tendons
	ligaments
	spider silk
	muscles

Correct

Ovalbumin is a storage protein.

Part E

Defensive proteins are manufactured by the _____ system.

	cardiovascular
	immune
	integumentary
	digestive
	nervous

Correct

The immune system is involved in protecting the body against invasion by foreign objects.