Answer:
A) one human somatic cell
Explanation:
A human genome is a complete set of DNA in somatic cell and it contains 23 chromosome pairs (nuclear genome). Beside nuclear genome cell also have mitochondrial genome. Unlike somatic cells (diploid-two sets of chromosomes, one from mother and one from father), germ cells (egg cell and sperm cells) are haploid, have only one set of chromosomes.
Human genomes include genes that are protein-coding but also noncoding DNA.
The given statement is true.
- On one side of the membrane, carrier proteins bind to molecules or ions and release them on the opposite side.
- In order to allow target molecules or ions to diffusely pass through the membrane without interfering with one another, channel proteins make holes/pores that permeate the membrane.
- The specific solute to be transported is bound by carrier proteins (also known as carriers, permeases, or transporters), which then go through a series of conformational changes to move the bound solute across the membrane.
- In contrast, channel proteins have significantly weaker interactions with the solute being conveyed.
- While some channel proteins are always open, others are "gated," which means that they respond to a specific stimulus to either open or close the channel (like an electrical signal or the binding of a molecule).
- Transport proteins known as channel proteins contain a hydrophilic channel via which specific molecules or ions can pass across the membrane (Ex: aquaporins for water). Transport proteins known as carrier proteins bind to molecules and modify their structure to move them across the membrane.
Learn more about channel protein here:
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Answer:
The anterior pituitary gland is controlled by regulatory hormones secreted by the <u>neurosecretory cells present in the hypothalamus.</u>
<u>Answer:</u>
<em>Sodium will move from the inside of the cell to the outside of the cell by diffusion.
</em>
<u>Explanation:</u>
A <em>difference in concentration of a substance</em> in two regions induces movement of that substance from the area of high concentration to the <em>area of low concentration</em>. Since the movement is according to a concentration gradient there is no need for energy expenditure. <em>This is called passive diffusion.
</em>
In this case passive diffusion of sodium will occur. If a substance has to be moved against its concentration gradient energy is required and this p<em>rocess is called active diffusion.
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