Explain the differences between channel proteins and carrier proteins and why cells need both.

What will be an ideal response?


Channel proteins allow more rapid transport but are not as selective. Carrier proteins are slower because of the conformation change. They are also more selective and can move larger molecules than channel proteins. Carrier proteins never allow free exchange across the membrane because they never create a continuous passage between the inside and outside of the cell.

Anatomy & Physiology

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Contrast the visual deficits that would result from someone having a mutation in the gene for rhodopsin versus a mutation in one of the genes for a photopsin

What will be an ideal response?

Anatomy & Physiology

Label J represents the


A) brachiocephalic trunk.
B) aortic arch.
C) left pulmonary arteries.
D) left pulmonary veins.
E) pulmonary trunk.

Anatomy & Physiology

What are the four mechanisms of heat transfer that the body uses?

a. externalization, conduction, respiration, and evaporation b. radiation, conduction, convection, and evaporation c. radiation, transference, convection, and dissipation d. radiation, conduction, respiration, and dissipation e. externalization, conduction, respiration, and dissipation

Anatomy & Physiology

The largest known protein in any organism is called connectin

Indicate whether the statement is true or false

Anatomy & Physiology