Question

Which protein serves as a chemical messenger?

1)hemoglobin
2)actin
3)myosin
4)insulin

Answer 1

Hemoglobin is a protein which allows the binding of oxygen to be transported.

Actin are proteins which form micro filaments -- fine structures in the cell

Myosin are transport proteins, they move along actin filaments

Insulin is a hormone, spreads information throughout the body/system.

Answer 2

so would it be 4?

Answer 3

@Festinger

Answer 4

4

Answer 5

Yes, and i was wrong about myosin.

http://www.youtube.com/watch?v=oHDRIwRZRVI

Answer 6

ok thanks!!