Chapter 8 – 1
Energy and Life
DaVinci HS Biology
8-1 Vocabulary
• Autotrophorganism that can capture energy from
sunlight or chemicals and use it to produce
its own food from inorganic compounds
• Heterotroph_organism that requires an organic source
of energy. Cannot create its own food
without organic compounds
• _Adenisine Triphosphate (ATP) –
– one of the principal chemical compounds
that living things use to store energy.
…Vocab
• ADP – Adenosine diphosphate
• Glucose – Simple Sugar, carbohydrate,
and source of energy
Adenosine triphosphate (ATP)
Chemical Energy and ATP
a. The cell’s activities are powered by
chemical fuels
i.
ii.
iii.
ATP – energy storage (full battery)
ADP - energy storage (partially full battery)
Energy is released when ATP is converted to
ADP
3 Phosphate groups
Adenine
Ribose
Figure 8-3 Comparison of ADP and
ATP to a Battery
Section 8-1
ADP
ATP
Energy
Adenosine diphosphate (ADP) + Phosphate
Partially
charged
battery
Go to
Section:
Energy
Adenosine triphosphate (ATP)
Fully
charged
battery
Figure 8-3 Comparison of ADP and
ATP to a Battery
Section 8-1
____
ATP
Energy
Adenosine diphosphate (ADP) + Phosphate
Partially
charged
battery
Go to
Section:
Energy
Adenosine triphosphate (ATP)
Fully
charged
battery
Uses of ATP
1. Active Transport
1. Energy in the cell
ATP and Glucose
a. Cells have very little ATP
a. Glucose stores more than 90 times the
energy of a molecule of ATP
a. Cells can regenerate ATP from ADP