Any portion of the loop where there is no movement of na and cl- will have less mitochondria than other cells in the loop.

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

The relationship between intron and exon