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Pituitary Gland

Steroid-based...

Question

Steroid-based hormones are able to act inside the cell. This is possible because

A

there are no receptors for hormones on the cell surface

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B

hormones must interact with the nucleus to have an effect.

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C

proteins carry them into the cell

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D

steroid-based hormones are hydrophobic molecules that can pass through the cell membrane.

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Solution

The correct option is D steroid-based hormones are hydrophobic molecules that can pass through the cell membrane.
Steroid based hormones are fat soluble so they can enter the cell easily after which they bind to the specific steroid receptors and perform the required activities on the cell. And because they are lipids(hydrophobic molecules) so they can enter the cell membrane.
So, the correct option is 'steroid-based hormones are hydrophobic molecules that can pass through the cell membrane'

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