What are steroid hormones most similar to?
a. cholesterol
b. amino acids
c. fatty acids
d. proteins

The answer to that question would be A. Cholesterol.

Cholesterol decreases membrane fluidity, as does steroids.

The root system of a plant constantly provides the stems and leaves with water and dissolved minerals. In order to accomplish this the roots must grow into new regions of the soil. The growth and metabolism of the plant root system is supported by the process of photosynthesis occurring in the leaves.