The process of cellular respiration catabolic pathway that breaks molecules into energy
<u>Explanation:</u>
Metabolic pathways consist of two distinct types: catabolic and anabolic. Catabolic deliver energy while breaking down molecules into easier molecules. Cellular respiration is one case of a catabolic pathway. During cellular respiration, sugar is held in by the cell and break to discharge energy that enables us to live.
Cellular respiration is the manner of oxidizing food particles, similar glucose, to carbon dioxide and water. The method transpires in two states:
- glycolysis, the division of glucose to pyruvic acid
- the entire oxidation of pyruvic acid to carbon dioxide and water
I think the mean DNA but don't quote me on that.
Answer:
I think you're referring to the Metaphase...
Explanation:
During Cell Division (or, rather before!) the DNA needs to be replicated. This normally is done by DNA Polymerase, and results in two identical double strands (the "Sister Chromatids".
These chromatids are held together at the Centromere, which will be the heart of the "X"-shape. After that the DNA is packed into Chromosomes by winding it around proteins called Histones. If I remember correctly there are 5 different Histones.
This "Zipping Up" makes the chromosomes more visible.
As the two sister chromatids are still connected, the result is the X-shaped Metaphase Chromosome....
