Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot.
Answer: I'd say C
Explanation: Small plants are at the bottom of the ecosystem, which means they have to start it out. I'm not sure tho.
Answer:
Plasmin
Explanation:
Plasmin is a serine protease also referred to as fibrin digesting enzyme, it is responsible for the dissolving or degradation of blood clot. The process by which plasmin degrades blood clot is called fibrinolysis. Note that plasmin (active) is formed from an inactive enzyme called plasminogen.
ATPase is the enzyme which is required to create ATP and is denoted as option B.
<h3>What is ATPase?</h3>
This type of enzyme is found in the mitochondrion and catalyzes the formation of ATP which provides energy to cells.
The ATP which is referred to as adenosine triphosphate is formed from the molecules known as ADP and inorganic phosphate which are present in the body cells. This ensures that the daily energy needs of the body are met.
Read more about ATPase here brainly.com/question/250287
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There are four major classes of biological macromolecules:
carbohydrates.
lipids.
proteins.
nucleic acids.
