The cell membrane separates the intracellular environment from the extracellular environment outside of the cell. A phospholipid is composed of a phosphate group and a lipid. It is composed of a hydrophilic, polar phosphate head and two hydrophobic fatty acid tails.
The structure of the bilayer is such that the tails are shielded from contact with water, creating a selectively-permeable barrier which will be impermeable to most hydrophilic molecules.
So, the answer is A) To maintain balance of water and nutrients in the cell.
Gel electrophoresis<span> is basically the process by which we take the </span>DNA<span>, and run an electric charge through it. The </span>DNA<span>, being negatively charged by default, will move towards the positive side.</span>
Answer:
A. true
B. false
C. true
D. true
E. true
Explanation:
A. it works kind of like a door lock they have a specific alignment in which it can fit only the complimentary substrates.
B. their shape isn't affected by the reaction. however their structure can be affected due to constant reuse.
C. they are biological catalysts that break down bonds which helps in making digestion faster.
D. for example: digestion, neutralization...
E. pH can affect the enzyme's shape which will slow it down, temperature can help the enzyme work faster however if it gets too high it will affect the enzyme's shape.
