Glycolysis and Krebs Cycle

Vocabulary flashcards covering the key terms, locations, inputs, and outputs of Glycolysis and the Krebs Cycle based on the lecture notes.

Glyc-

Prefix meaning sugar.

-lysis

Suffix meaning break down.

Glycolysis

The step in cellular respiration taking place in the cytoplasm where glucose is transformed into pyruvic acid, releasing energy as glucose bonds are broken.

ATP Net Yield of Glycolysis

Glycolysis uses $2\,\text{ATP}$ and produces $4\,\text{ATP}$, resulting in a net gain of $2\,\text{ATP}$.

NAD+

An electron carrier in glycolysis that accepts 2 electrons ($e^-$) and $\text{H}^+$ to form NADH.

Anaerobic Nature of Glycolysis

Glycolysis does not require oxygen and takes place in the cytoplasm.

Krebs Cycle

A process occurring in the mitochondria matrix that requires oxygen and breaks down pyruvic acid from glycolysis into $\text{CO}_2$ while releasing energy.

Citric Acid Cycle

Another name for the Krebs Cycle, named because citric acid is formed and broken down during the cycle.

Location of the Krebs Cycle

Occurs in the mitochondria matrix.

Outputs of the Krebs Cycle

Produces $\text{CO}_2$, $2\,\text{ATP}$, $\text{NADH}$, and $2\,\text{FADH}_2$.

Role of NADH and FADH2 in Cellular Respiration

Molecules produced in glycolysis and the Krebs Cycle that pass high-energy electrons to the ETC (Electron Transport Chain).