AP BIO - Glycolysis

Front

What is glycolysis?

Back

Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing ATP and NADH in the process.

Front

What is the main product of glycolysis?

Back

The main products of glycolysis are two molecules of pyruvate, two molecules of ATP, and two molecules of NADH.

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes.

Front

What role does NAD+ play in glycolysis?

Back

NAD+ acts as an electron carrier, accepting electrons during glycolysis to form NADH.

Front

What is the difference between substrate-level phosphorylation and oxidative phosphorylation?

Back

Substrate-level phosphorylation occurs during glycolysis and the Krebs cycle, directly producing ATP from ADP. Oxidative phosphorylation occurs in the electron transport chain, generating ATP through a proton gradient.

Front

What happens to pyruvate after glycolysis?

Back

Pyruvate can be further processed in aerobic conditions to enter the Krebs cycle or converted to lactate in anaerobic conditions.

Front

What is the significance of the energy investment phase in glycolysis?

Back

The energy investment phase requires the input of 2 ATP to phosphorylate glucose, making it more reactive and facilitating its breakdown.

Front

What are the end products of glycolysis?

Back

The end products of glycolysis are 2 pyruvate, 2 ATP (net gain), and 2 NADH.

Front

What is the role of hexokinase in glycolysis?

Back

Hexokinase is an enzyme that catalyzes the first step of glycolysis, converting glucose to glucose-6-phosphate.

Front

What is fermentation and how is it related to glycolysis?

Back

Fermentation is an anaerobic process that follows glycolysis, allowing for the regeneration of NAD+ so glycolysis can continue in the absence of oxygen.