BASICS of Glycolysis and the Krebs Cycle - Production of ATP, NADH, & FADH2

The video provides an overview of glycolysis and the Krebs cycle, focusing on glycolysis. It explains glycolysis as a 10-enzyme pathway that splits glucose into two pyruvate molecules, detailing the energy investment and payoff phases. The regulation of glycolysis through allosteric enzymes, particularly phosphofructokinase, is discussed. The fate of pyruvate, including its conversion to acetyl CoA in the mitochondria, is also covered.

What are the two metabolic pathways discussed in the video?

• Krebs Cycle and Calvin Cycle

• Electron Transport Chain and Calvin Cycle

• Glycolysis and Krebs Cycle

• Glycolysis and Electron Transport Chain

What is the primary purpose of glycolysis?

• To derive energy from glucose

• To produce oxygen

• To store fat

• To synthesize proteins

How many molecules of pyruvate are produced from one molecule of glucose during glycolysis?

• One

• Two

• Three

• Four

What is the net gain of ATP molecules in glycolysis?

• Two

• One

• Three

• Four

Which enzyme is responsible for the phosphorylation of glucose in glycolysis?

• Pyruvate kinase

• ATP synthase

• Hexokinase

• Phosphofructokinase

What is the role of phosphofructokinase in glycolysis?

• It transports glucose into the cell

• It splits glucose into pyruvate

• It converts pyruvate to acetyl CoA

• It regulates the pathway by responding to ATP levels

What happens to glycolysis when ATP levels are high?

• It remains unchanged

• It slows down

• It speeds up

• It stops completely

What is the fate of pyruvate in aerobic conditions?

• It is converted to lactate

• It is converted to acetyl CoA

• It is stored as glycogen

• It is used in protein synthesis

Where does the conversion of pyruvate to acetyl CoA occur?

• In the mitochondria

• In the endoplasmic reticulum

• In the cytoplasm

• In the nucleus

How many acetyl CoA molecules are produced from one glucose molecule?

• Four

• Three

• Two

• One