CELL RESPIRATION
THE KREBS CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
second stage of cellular respiration
|
|
|
chemical substance that an organism requires to live
|
|
|
electron carrier involved in glycolysis
|
Detailed explanation-1: -The Krebs cycle is the second stage of cellular respiration. During the Krebs cycle, energy stored in pyruvate is transferred to NADH and FADH2, and some ATP is produced.
Detailed explanation-2: -Second Step of the Krebs Cycle: Aconitase In the second reaction of the Krebs cycle, the isomerisation of citrate to isocitrate takes place. As an intermediate, cis-aconitate is formed. Therefore, it is a two-step reaction sequence. In the first step, H2O is removed from the cireate molecule (see Figure).
Detailed explanation-3: -The second stage of cellular respiration, the Krebs cycle, takes place in the matrix. The third stage, electron transport, takes place on the inner membrane.
Detailed explanation-4: -The second stage of cellular respiration, called the Krebs cycle, takes place in the matrix of a mitochondrion.
Detailed explanation-5: -The main function of the Krebs cycle is to produce energy, stored and transported as ATP or GTP. The cycle is also central to other biosynthetic reactions where the intermediates produced are required to make other molecules, such as amino acids, nucleotide bases and cholesterol.