While some mutations can benefit an organism, others are harmful and can lead to cancer. So the mutation which lead to cancer is the mutation of genes.
And there are three kinds and three types of genes that contribute to cancer.
These are the genes that normally signal cells to grow.
The first type is called oncogenes. These are the genes that normally signal cells to grow. And when oncogene is mutated, the cell would abnormally grow and cause cancer.
I believe the answer is chromosome or dna
Answer:
A. Sodium is needed to generate an action potential.
Explanation:
Action potentials are generated by the special types of the voltage-gated channels which are embedded in the plasma membrane of the cell.
These channels are shut when the membrane potential is near zero and the voltage-gated channels open only when the membrane potential is more than the threshold voltage.
When the channels are open then they allow the flow of sodium ions which ultimately changes the electrochemical gradient which rises the membrane potential. This rise in membrane potential generates the action potential.
It's important to not misuse or overuse antibiotics because of the risk of drug addiction, and the side effects (overdose, and decline in physical health) of having misused and/or overused an antibiotic. In fact misusing or overusing antibiotics could create more problems than what you originally used the antibiotics for.
I think it has something to do with their polar-nonpolar makeup. They have a polar head and a nonpolar tail. Only the polar side bonds with water, so they form two layers so that the polar sides can stick out and bond with the water, while the nonpolar tails can face each other. Imagine this:
p------n n------p
p------n n------p
And outside the double layer are water molecules bonding with the polar part:
wwww p------n n------p wwww
<span>wwww p------n n------p wwww
</span>