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.  

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation: