Stage 1: Glycolysis (HL)

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Questions and Answers

What is the main end product of glycolysis?

NADH

Pyruvic acid (correct)

Glucose

ATP

Where does glycolysis occur in the cell?

Nucleus

Cytosol (correct)

Endoplasmic reticulum

Mitochondria

How many ATP molecules are produced during glycolysis?

2 (correct)

What type of process is glycolysis?

Anaerobic (D) Signup and view all the answers

What are the starting materials for the glycolysis reaction?

Glucose and NAD⁺ (C) Signup and view all the answers

Where does the Krebs Cycle take place in the cell?

Lumen matrix of the mitochondria (C) Signup and view all the answers

What molecule is formed when pyruvic acid is converted in the Krebs Cycle?

Acetyl Co-enzyme A (D) Signup and view all the answers

What is the primary purpose of anaerobic respiration?

To release energy from food without using oxygen (A) Signup and view all the answers

What is one of the main products of the Krebs Cycle?

Carbon Dioxide (B) Signup and view all the answers

Which molecule traps high-energy electrons in the Krebs Cycle?

NAD+ (D) Signup and view all the answers

In which cellular component does anaerobic respiration primarily occur?

Cytosol (B) Signup and view all the answers

What are the main products of anaerobic respiration in animal muscle cells?

Lactic acid (C) Signup and view all the answers

What is the primary role of ATP produced in the Krebs Cycle?

To release energy for cellular activities (C) Signup and view all the answers

Which of the following correctly describes a step in anaerobic respiration?

Pyruvic acid can be converted into lactic acid or ethanol and CO2 (A) Signup and view all the answers

How many molecules of ATP are produced during anaerobic respiration?

Two molecules (B) Signup and view all the answers

Where in the mitochondria does the electron transport system occur?

Cristae (C) Signup and view all the answers

What is the primary function of the electron transport system?

To produce ATP through oxidative phosphorylation (A) Signup and view all the answers

What happens to energy as electrons pass through the electron transport carriers?

Energy is lost and used to form ATP (D) Signup and view all the answers

What is the final product when low-energy electrons combine with oxygen and hydrogen ions?

Water (B) Signup and view all the answers

Which of the following processes is coupled with the electron transport system?

Oxidative phosphorylation (D) Signup and view all the answers

Study Notes

Stage 1: Glycolysis (HL)

Takes place in the cytosol of the cell (the cytoplasm of the cell minus the organelles).
No oxygen needed- anaerobic process.
Glucose, a 6-carbon molecule is converted to pyruvic acid, a 3-carbon molecule.
The small amount of energy released is used to make 2 Adenosine Triphosphate molecules (ATP).
The ATP is formed by using the energy in the glucose molecule to combine ADP (adenosine diphosphate) to a phosphate (P).
In glycolysis, glucose is only partially broken down.
This is why glycolysis produces only a low yield of energy.

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Description

Explore the first stage of cellular respiration with a focus on glycolysis. This quiz covers key concepts such as the transformation of glucose to pyruvic acid and the anaerobic energy process involved. Test your understanding of ATP production and the significance of glycolysis in metabolism.