Answer: Na+ channels are closed
Explanation:
The refractory period describes a period between the initiation of an action potential (where Na+ channels are active/open), and immediately after the action potential’s peak. In the absolute refractory period, action potentials cannot be generated, as Na+ channels are in an inactive or closed state, they usually take around one or two minutes.
After the absolute refractory period the relative refractory period (RRP) occurs. During the RRP, it is hard to send another action potential. Na+ channels are once again open, but the cell remains hyperpolarized- its membrane potential, remains negative. Recovery from inactivation is voltage and time-dependent; Action potentials would require an influx of more positively charged ions. These must be more than a specific threshold in order to have the cells send along more action potentials which helps with figuring out stimulus intensity.
Answer:
Hetezygous
Explanation:
<em>The genotype of the initial green pod plant would be heterozygous.</em>
Let pea pod color be represented by C (c) alleles.
First, let us assume that the genotype of the green pea pod plant is homozygous dominant, CC. This was crossed with homozygous recessive, cc.
CC x cc
Cc Cc Cc Cc
<u>All the progeny will have Cc genotype with phenotypically green color. </u><u>This is in contrast to the result obtained from the test cross in the illustration, hence the genotype of the initial green pea pod plant cannot be homozygous dominant.</u>
Now, let us assume that the genotype is Heterozygous, Cc.
Cc x cc
Cc Cc cc cc
<u>50% of the progeny has Cc genotype with phenotypically green color while the remaining 50% has cc genotype with phenotypically yellow color. </u><u>This is consistent with the result from the illustration.</u>
Hence, the genotype of the initial green pea pod plant is heterozygous.
The alcoholic beverage that causes sharper increases in the blood alcohol concentration is Liquor. Blood alcohol concentration or the blood alcohol content is the percent of the blood that is concentrated with alcohol. For example a BAC of 0.10 means that 1% of the blood stream is composed of alcohol. It is important to note that a range of 0.35% to 0.4% of BAT represents a potentially lethal alcohol poisoning.
C) blood, blood vessels, and heart.
Active transport hope this helps out at least.
