The answer is none of the above
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
The third option from top is the answer. The major products that result from the Krebs cycle are NADH, FADH and ATP in that order.
The Krebs cycle is the central metabolic pathway in all aerobic organisms. The cycle is a series of eight reactions that occur in the mitochondrion. These reactions take a two carbon molecule called acetate and completely oxidize it to carbon dioxide.
The Krebs cycle serves two main purposes namely:
1.To increase the cell's ATP producing potential by generating reduced electron carriers such as NADH and reduced ubiquinone.
2. To provide the cell with a variety of metabolic precursors.
By the time the eight reactions in Krebs cycle are over, one ATP, one FADH and four NADH molecules will have been produced
6. I believe it's C
7. I believe it's D
8. I believe it's B
You should look at your lesson, most of the answers are there
