What steroid acts as the molecular building block of the human steroid hormones?

The correct answer is cholesterol.

Explanation:

Steroid hormones refer to the fat-soluble molecules produced from cholesterol. Of these, the three prime groups of sex hormones are androgens, estrogens, and progesterone. All these are produced in both males and females, however, in different concentrations.  

The steroid passes through the nucleus of the cell, and combines with specific receptors and genes and stimulate the cell to produce proteins.  

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.