Answer: D. NE producing cell bodies are found in widespread brain regions
Explanation:
Norepinephrine (NE) is a chemical in the body that exists naturally and acts as both a neurotransmitter and a stress hormone. When the brain perceives that there has been a traumatic occurrence, it is released into the blood as a stress hormone.
Norepinephrine is produced in the inner part of the adrenal glands which also produces adrenaline.
Hence, NE is only found in inner part of the adrenal glands and the correct option is D.
The distributions of individual intron<span> (</span>intron length<span> distribution) and </span>exon<span> ... We also</span>used<span> the general databases of 10 model species for similar analysis for the ... An</span>average gene<span> contains 3.7 </span>introns<span> in 1 kb of protein </span>coding region, but with .... ofintron sizes<span> in Figure 1 implies that very large </span>introns<span> may </span>make<span> up a small </span>
Answer:
Telomerase acts to elongate the 3' end of linear DNAs.
Explanation:
The 5' ends of the linear DNA can not be replicated by DNA polymerase due to the absence of free 3' end to be elongated. This is prevented by the action of telomerase enzyme which contains both RNA and protein components. The RNA component of the telomerase is 150 nucleotides long.
The telomerase enzyme elongates the 3' end of the template strand by using its inbuilt RNA template. Since it uses an RNA template to make the DNA copies, it is a reverse transcriptase. Repeated translocation and repositioning of the enzyme elongates the 3' end of the template DNA.
The RNA primase makes the RNA primer at the end of the new telomere strand which is then elongated by DNA polymerase. DNA ligase seals the nick. In this way, telomerase serves to prevent the loss of 5' ends of linear DNA in successive rounds of DNA replication.
Niacin is also known as Vitamin B3. It is needed by the body because it produces the coenzymes NAD and NADP which are responsible for the body's metabolic reactions. If you are deficient of niacin, the body can synthesize it using tryptophan. Food sources of tryptophan include eggs, liver, peanut butter and dairy products.
The temperature becomes hotter than what it was
