Akey intermediate in the catabolism of fatty acids with uneven numbers of carbon atoms is

Propionly CoA

Explanation:

During oxidation of odd chain fatty acids, the odd chain are oxidized exactly in the same manner as even chains. However, after successive removal of 2 carbon units, at the end, one 3-carbon unit, propionyl CoA is formed.

Propionyl CoA is a product of beta oxidation of odd chain fatty acids.

In three steps reaction propionyl-CoA can be converted to succinyl-CoA, an intermediate of the citric acid cycle which is converted to oxaloacetate, and is used for gluconeogenesis.

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.