Steroid hormones bind to
a. carbohydrate receptors on the cell membrane of the target cell.
b. carbohydrate receptors in the cytoplasm of the target cell.
c. protein receptors on the cell membrane of the target cell.

option c.

Steroid hormone bind to protein receptors on the cell membrane of the target cells.

Explanation:

Steroid hormone are fat soluble substance that act as hormones. Examples of steroid hormone are oestrogen female sex, androgen, progestin e.t.c. They are found in the nucleus, cystosol and cell membrane of the target cell.

They bind to protein receptors of the target cell membrane to initiate signal transduction and gene expression.