AP BIOLOGY

CELL RESPIRATION

THE KREBS CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Select the products of the Krebs cycle
A
NADH
B
FADH2
C
ATP
D
CO2
Explanation: 

Detailed explanation-1: -For complete oxidation of a glucose molecule, the Krebs cycle yields 4 CO2, 6NADH, 2 FADH2 and 2 ATPs.

Detailed explanation-2: -Steps of the Krebs Cycle After citric acid forms, it goes through a series of reactions that release energy. The energy is captured in molecules of NADH, ATP, and FADH2, another energy-carrying compound. Carbon dioxide is also released as a waste product of these reactions.

Detailed explanation-3: -These six CO2 molecules are given off as waste gas in the Krebs cycle. They represent the six carbons of glucose that originally entered the process of glycolysis. At the end of the Krebs cycle, the final product is oxaloacetic acid. This is identical to the oxaloacetic acid that begins the cycle.

Detailed explanation-4: -Products and Functions of the Krebs Cycle For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.

Detailed explanation-5: -The mitochondrial matrix has the required enzymes and environment for the complex reactions of the Krebs cycle to take place. Further, the products of the Krebs cycle drive the electron transport chain and oxidative phosphorylation, both of which occur in the inner mitochondrial membrane.

There is 1 question to complete.