Answer:
E. that area of the membrane is in the absolutely refractory period.
Explanation:
Refractory period is a period during which neuron cell cannot be stimulated (depolarized). This is why the action potential can only travel in one direction from the neuron body towards axon.
Refractory period occurs because of the inactivation of voltage-gated sodium channels (while action potential is at its peak) which cannot be open for a certain period of time. and membrane cannot be depolarized.
Answer: True
Explanation: Essentially, it means that organisms must eat other organisms. ... Food energy flows from one organism to another. Arrows are used to show the feeding relationship between the animals. The arrow points from the organism being eaten to the organism that eats it.
How about "recombinant DNA?" Which is the result of DNA cloning as ttom suggests.
You can work out the concentration of H+ ions (denoted as [H+]) easily on a calculator if you know the pH, which you do. The easiest way to work out [H+] is to do

. In your case, the maths here would be

, which gets you an answer of 1.58x

, or 0.000158. For 6.2 it would be

, which gives you 6.31x

, or 0.00000063. As you can see, the concentration of H+ ions is greater in pH 3.8.
To put it simply, the [H+] decreases the higher up the pH scale you go, and increases as you go lower, but now you know the maths to work it out for yourself too.
The enzyme produced by the TYR gene, called tyrosinase<span>, is required for the synthesis of </span>melanin<span> pigment. A mutation in the TYR gene causes the most common form of albinism.</span>