Yes we never know what could happen in an eco system
Answer:
The correct option is A. Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene.
Explanation:
Steroid hormones are derived from cholesterol and regulate multiple biological processes. All steroid hormones exert their action by crossing the plasma membrane and by binding with their respective intracellular receptors. They stimulate cell growth in a very different way, their lipophilic nature gives them the ability to cross lipid barriers, so, without the need for extracellular signals, these hormones can easily enter the cell, cross the cytoplasm and reach the nucleus. There they bind to specific receptors that are associated with DNA promoter regions, modifying their structure and promoting the expression of the genes under their control.
Facilitated diffusion of substances crossing the cell (plasma) membrane takes place with the help of proteins such as channel proteins and carrier proteins.
The right option is transitive
inference
Transitive inference is a form of
deductive reasoning in which the relationship between items that have not been
clearly assessed is derived. Transitive inference gives the ability to conclude
that if item A is related to Item B and Item B is related to Item D, then Item
A must be related to Item D. From the question given above, the understanding
demonstrates transitive inference.
