The correct answer is:
(D) enzyme linked receptor
When non-nerve cells become involved in response to signals, the type of receptor that goes into action is the enzyme linked receptor.
Explanation:
An enzyme-linked receptor, also identified as a catalytic receptor, is a trans -membrane receptor, where the adhesive of an extracellular ligand produces an enzymatic action on the intracellular side. Hence a catalytic receptor is an integral membrane protein containing both enzymatic catalytic and receptor functions.
The chemicals help the roots of the plants to grow
Well too much oxygen can kill humans which is one. And 2 If the whole atmosphere was oxygen then things will burn easily.
The plants roots and stem help the plant to have gravity
Steroids have a number of different functions but essentially all act as hormones in the body.
