9.3.1

Glycolysis

Test yourself on Glycolysis

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Glycolysis

Respiration produces ATP and can be either aerobic or anaerobic. Glycolysis is the first stage in both these processes. Glycolysis happens in the cytoplasm and is an anaerobic process.

Phosphorylation

Phosphorylation

  • The first step in glycolysis involves the phosphorylation of glucose to glucose phosphate using one molecule of ATP.
  • Glucose phosphate is phosphorylated by another molecule of ATP to hexose bisphosphate (a six-carbon molecule)
  • Hexose bisphosphate splits into two molecules of triose phosphate (TP).
Oxidation

Oxidation

  • The two molecules of TP are oxidised to pyruvate (another three-carbon molecule) in a multi-step reaction.
  • A single TP molecule produces two molecules of ATP and one molecule of reduced NAD (NADH) in this process.
Net gain

Net gain

  • 2 ATP molecules.
  • 2 NADH molecules.
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1

Unity & Diversity - Molecules

1.1

Water

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1.2

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1.3

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1.4

Translation

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2

Unity & Diversity - Cells

2.1

The Origin of Cells

2.1.1Origins - Endosymbiosis
2.2

Introduction to Cells

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2.3

Ultrastructure of Cells

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2.4

Cell Division

2.4.1The Cell Cycle2.4.2Mitosis2.4.3Regulation of the Cell Cycle2.4.4End of Topic Quiz - The Cell Cycle2.4.5IB Multiple Choice - The Cell Cycle2.4.6Extended Response - Mitosis
2.5

Structure of DNA & RNA

2.5.1DNA & RNA
2.6

DNA Replication, Transcription & Translation

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2.7

Cell Respiration

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2.8

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2.9

Viruses

2.9.1Viruses
3

Unity & Diversity - Organisms

3.1

Diversity of Organisms

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3.2

Evidence for Evolution

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Natural Selection

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4

Unity & Diversity - Ecosystems

4.1

Classification

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Cladistics

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Evolution & Speciation

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Conservation of Biodiversity

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5

Form & Function - Molecules

5.1

Carbohydrates & Lipids

5.1.1Monosaccharides5.1.2Disaccharides & Polysaccharides5.1.3Triglycerides & Phospholipids5.1.4Cellulose5.1.5Starch & Glycogen
5.2

Proteins

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6

Form & Function - Cells

6.1

Membranes & Membrane Transport

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6.2

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7

Form & Function - Organisms

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Gas Exchange

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7.2

Transport

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7.3

Muscle & Motility

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8

Form & Function - Ecosystems

8.1

Species, Communities & Ecosytems

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8.2

Energy Flow

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8.3

Carbon Cycle

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8.4

Climate Change

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9

Interaction & Interdependence - Molecules

9.1

Enzymes

9.1.1Enzymes9.1.2Factors Affecting Enzyme Activity9.1.3Enzyme-Controlled Reactions9.1.4End of Topic Test - Enzymes
9.2

Metabolism

9.2.1Molecules to Metabolism
9.3

Cell Respiration

9.3.1Glycolysis9.3.2Aerobic Respiration
9.4

Photosynthesis

9.4.1Light-Dependent Reaction9.4.2Light-Independent Reaction9.4.3End of Topic Test - Photosynthesis Reactions9.4.4Limiting Factors9.4.5Photosynthesis Experiments9.4.6End of Topic Test - Photosynthesis9.4.7End of Topic Test - Photosynthesis
10

Interaction & Interdependence - Cells

10.1

Chemical Signalling

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10.2

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10.3.1Coming Soon!
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Ecological Niches

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11

Interaction & Interdependence - Organisms

11.1

Integration of Body Systems

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Defence Against Disease

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12

Interaction & Interdependence - Ecosystems

12.1

Populations & Communities

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13

Continuity & Change - Molecules

13.1

DNA Replication

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14

Continuity & Change - Cells

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14.2

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15

Continuity & Change - Organisms

15.1

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15.2

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16

Continuity & Change - Ecosystems

16.1

Natural Selection

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Stability & Change

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Practice questions on Glycolysis

Can you answer these? Test yourself with free interactive practice on Seneca — used by over 10 million students.

  1. 1
    What is the net gain of glycolysis?Multiple choice
  2. 2
    Which of the following statements about glycolysis are true?True / false
  3. 3
    The Process of GlycolysisPut in order
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Molecules to Metabolism

Aerobic Respiration