Download ATP and Sources of Energy

ATP
 A compound
that stores energy
 Stands for Adenosine
triphosphate
 Made up of 3 parts
 5 carbon sugar
 Adenosine
 3 Phosphates
Making Energy with ATP
 Energy
is
released when a
bond holding the
phosphate group
is broken.
 The energy is
used by the cell
to do work.
How Cells use Energy
 Mechanical
functions
 Moving cilia/flagellum
 Muscle contraction
 Active
transport
 Sodium-Potassium Pump
 Building
and breaking down large
molecules
 Starch, glycogen, amino acids etc.
The ATP Cycle
Energy is stored in chemical bonds.
 Energy is released by breaking the
chemical bonds and is used to power
cell activities.
 Energy is depleted and a new molecule
ADP is formed.
 Energy is created by using energy
released from other chemical reactions
to bond a phosphate group to
ADP...making ATP.

ATP Cycle
ADP is ATP minus 1 P
 ATP
= Adenosine
triphosphate
 ADP = Adenosine
diphosphate
 When energy is used
one phosphate
group is removed
from ATP and ADP is
formed.
Organisms and ATP
 Two
Groups based on how they
obtain food:
 Autotrophs – Producers
 Heterotrophs – Consumers
 Food = Organic compounds that
can be broken down into energy
Autotrophs
 Make
food from carbon dioxide and
the sun’s energy.
 Examples: Plants, algae, some
bacteria
 Usually make Glucose as food
molecule.
 Sunlight is not absolutely needed, but
is most commonly used.
 Hydrothermal Vents
Heterotrophs
 Cannot
make their own food.
 Dependent on the consumption of
autotrophs or other heterotrophs for
food.
 The energy in the food is:
 Lost and expelled as waste.
 Used for cellular processes.
 Stored by the organism for future use.
Left-side Activity

Draw and label an ATP molecule
 Specific Sugar
 Phosphate
 Specific Nitrogenous Base

Draw and label ATP cycle