Plants and grass and trees and stuff <span />
The simplest answer is that these all have a backbone/notochord and all have internal skeletons of some type,
Answer:
it provides energy for chemical reactions
Explanation:
enzymes are biological catalysts which speeds up a chemical reaction without changing itself.
as like catalysts providing activation energy for the reaction enzymes provides energy for a reaction
The given statement that proteins in a membrane are integral if they are embedded in the membrane and protrude from either surfaces of the bilayer holds true.
<h2>
What are integral proteins?</h2>
Integral proteins are the proteins that are present on the membrane of the cell and control the entry of the certain molecules into the cell.
The integral proteins also act as an receptors to certain hormones like insulin.
The integral protein is permanently embedded into the membrane of the cell and is a crucial part of the cell transport system.
Learn more about integral proteins with the help of given link:
brainly.com/question/24989360
#SPJ4
1a. As evoultion took place, the creatures gained weight and height.
1b. Not sure, I would assume fossils they found with the rocks from that time period.