Unlike signal transduction in many other sensory receptors, signal transduction in rods?

results in hyperpolarization of the sensory cell.
does not involve the participation of a G protein.
takes place entirely in the plasma membrane.
involves a second messenger.

Suppose a mutation greatly increases the affinity of a rod’s sodium channels for cGMP, such that once cGMP binds to a channel, it remains bound for much longer than normal. What would be the effect of this mutation on the rod’s sodium channels?

The sodium channels would open and close randomly, regardless of the presence of light.
The sodium channels would remain closed in the light and the dark, even when cGMP decreases after light stimulation.
The sodium channels would remain open in the dark and close rapidly in the light.
The sodium channels would remain open longer, even when cGMP decreases after light stimulation.

Brings about the sense cell becoming hyperpolarized. Even when cGMP drops following light stimulation, the sodium channels would stay open for a longer period of time.

What functions does your body's plasma serve?

55% of the total volume of your blood is made up of the liquid substance called plasma. In addition to circulating throughout the circulatory system, plasma is essential for your body's ability to heal after damage, deliver nutrients, eliminate waste, and prevent infection.

Do you benefit from giving plasma?

You become more conscious of your food in other ways as well after donating plasma. Additionally, your physical health could benefit from it. The possibility of lowering bad cholesterol levels and raising good cholesterol, particularly in women, is one health advantage of routine plasma donation.

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