Which of the following is the products of the Krebs cycle?

ATP
NADH
FADH
all of these

All of these are products of the Krebs cycle.

All of these are products of the Krebs cycle.

The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle, is a series of chemical reactions that occur in the mitochondria during cellular respiration. This cycle produces energy-rich molecules that can be used by the cell.

To determine which of the given options are products of the Krebs cycle, we need to understand the specific molecules that are generated in this process.

ATP (Adenosine Triphosphate) is a high-energy molecule that serves as the primary source of cellular energy. During the Krebs cycle, ATP is not directly produced. However, the high-energy potential stored in certain molecules generated in this cycle can be used to produce ATP in subsequent steps of cellular respiration, such as oxidative phosphorylation.

NADH (Nicotinamide Adenine Dinucleotide, reduced form) and FADH (Flavin Adenine Dinucleotide, reduced form) are electron carriers that become reduced during the Krebs cycle. These electron carriers have high-energy electrons that are used in the electron transport chain, another step in cellular respiration, to produce ATP.

Therefore, from the given options, NADH and FADH are products of the Krebs cycle. They carry high-energy electrons that are used to produce ATP in later steps of cellular respiration. So the correct answer is: NADH and FADH.