Life on Earth: At a Glance

Life on Earth
Audesirk & Audesirk
Prentice-Hall, Inc.

Glucose Metabolism: An Overview
Glycolysis: Glucose must be activated by ATP before its energy can be harvested.

Fermentation
Some cells ferment pyruvic acid to lactic acid.
Other cells ferment pyruvic acid to alcohol.

Cellular Respiration
Pyruvic acid is transported into the mitochondrial matrix.
Pyruvic acid is broken down by reactions in the mitochondrial matrix.
Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.
Fermentation: Some cells ferment pyruvic acid to lactic acid.
Other cells ferment pyruvic acid to alcohol.

Cellular Respiration
Pyruvic acid is transported into the mitochondrial matrix.
Pyruvic acid is broken down by reactions in the mitochondrial matrix.
Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; Other cells ferment pyruvic acid to alcohol.

Cellular Respiration
Pyruvic acid is transported into the mitochondrial matrix.
Pyruvic acid is broken down by reactions in the mitochondrial matrix.
Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.
Cellular Respiration: Pyruvic acid is transported into the mitochondrial matrix.
Pyruvic acid is broken down by reactions in the mitochondrial matrix.
Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; Pyruvic acid is broken down by reactions in the mitochondrial matrix.
Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; Energetic electrons are carried to electron transport systems in the inner mitochondrial membrane.
Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; Chemiosmosis captures energy stored in a hydrogen ion gradient and produces ATP.
ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; ATP is transported from the mitochondrial matrix and diffuses into the cell cytosol.
Cellular metabolism influences the way entire organisms function.; Cellular metabolism influences the way entire organisms function.

Designed in cooperation with Andrew Stull and Steven Brunasso.

Last Update - July 25, 1997