Describe the process of the Krebs cycle.
Acetyl CoA (2 carbon compound) from the link reaction combines with a 4 carbon compound called oxaloacetate. This reaction releases the CoA enzyme allowing it to be re-used. The now 6 carbon compound (citric acid) releases Co2 to leaving a 5 carbon compound. This reaction also produces NADH, from the coenzyme NAD+ The 5 carbon compound then converts back into the 4 carbon by releasing Co2 , 2 NADH, 2FADH2 and ATP, from ADP and PI.. The cycle can then be repeated. For each molecule of glucose the cycle occurs twice as two acetyl CoA are produced.
CS
Related Biology A Level answers
All answers ▸Describe the roles of calcium ions and ATP in the contraction of a myofibril (5 marks)
How does the oxygen in the air reach respiring cells in humans?
In humans, cystic fibrosis is caused by a recessive allele, f. A man and a woman are both heterozygous for the cystic fibrosis allele. What is the probability that they will produce a girl who has cystic fibrosis?
What is mitosis?