Question

What
are
steroids
and
sterols?
​

Answer 1

Answer:

Steroids vary by the functional groups attached to this four-ring core and by the oxidation state of the rings. Sterols are forms of steroids with a hydroxyl group at position three and a skeleton derived from cholestane.

Explanation:

Here above your answer hope that my answer is helpful please mark me as brain list and follow me...

Answer 2

Answer:

Not requiring any proteins to transport them to target cell in the bloodstream

Effects are short term and quickly reversed

Binding to receptors on the outside of the cell membrane

Binding to cytosolic or nuclear receptors

Explanation:

Steroid hormones are derivatives of cholesterol and therefore can pass through the plasma membrane of cells since they are lipophilic. Steroid hormones generally don't bind on the surface of plasma membranes, but instead to receptors inside the cell itself. Since they are nonpolar, they are carried by proteins in the blood.