Answer:
In biology, depolarization or hyperpolarization is a change within a cell, during which the cell undergoes a shift in electric charge distribution, resulting in less negative charge inside the cell compared to the outside.
Explanation:
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The principle hormones produced by the thyroid gland are:. T3 (tri-iodothyronine) and T4 (thyroxine).
<h3>What is thyroid gland?</h3>
Thyroid gland is two globular structure present in the neck. This gland produce growth hormone. It is an endocrine gland.
The thyroid hormone helps in regulating the use of energy by the body. These hormones help in growth and development of the body.
Thus, the hormones are T3 (tri-iodothyronine) and T4 (thyroxine).
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Answer:
The correct answer would be A. Condensation, precipitation, runoff, groundwater.
Water cycle explains the cyclic movement of water through the four spheres of the earth.
The water undergoes different physical states while moving through the cycle.
It starts with the evaporation by surface water is transported from the hydrosphere to the atmosphere in the form of water vapors. Transpiration and sublimation also lead to the formation of water vapors in the atmosphere.
The temperature keeps decreasing as the water vapors rise up in the sky. The lower temperature condenses the water vapors into tiny drops which form clouds and fog in the sky.
The tiny droplets accumulate to form bigger droplets and with the combined effect of temperature, wind, and gravity they precipitate in the form of rain, snow, frost, dew et cetera.
The water that falls on the earth surface then runoff into water bodies like stream, lakes, river, seas, and oceans.
Some of the water infiltrates into the soil and form the groundwater.
Answer:
C. "Because you have had one child with Tay-Sachs, you must each carry the allele. Any child you have has a 25% chance of having the disease
Explanation:
Tay-Sachs disease is an autosomal recessive disorder that means a child will acquire the phenotype or we can say disease only when both the alleles which cause disease are present in the child.
Here, in this condition neither parent has Tay-Sachs but they gave birth to a child who is suffering from the disease then it simply means that both the parents are carrier of this disease i.e. they both are heterozygous.
The cross and probability of healthy and diseased child is shown as under:
Mother Father
Parents Tt Tt
/ | | \
Off-springs TT Tt Tt tt
<u>Out of these 4 probable off-springs only 3 with genotype TT, Tt & Tt will be healthy while the 1 with genotype tt will be diseased.</u><u> </u><u>So, the probability of diseased child is 1/4 which is 25%. </u>
Also, the birth of children is an independent event so if one child has already been born with this disease then it doesn't mean that the next 3 children will be healthy for sure i.e. birth of first child cannot influence the next child. In short we can also say that in the next birth, there is still 25% chance of the child being born with this disease because previous birth has nothing to do with next birth.
<span>Because by the time it burns it self out, in a couple billion years, it won't matter. The fact that it will destroy the earth at this point also makes it not matter</span>
