Section 4-1
“ATP”
Write everything that is
BLACK
4.1 Chemical Energy and ATP
4.1 KEY CONCEPT:
All cells need chemical energy.
4.1 Chemical Energy and ATP
The chemical energy used for most cell
processes is carried out by ATP
(adenosine triphopshate)
• Molecules in food store chemical energy in their bonds.
Starch molecule
Glucose molecule
4.1 Chemical Energy and ATP
• ATP transfers energy from the breakdown of
food molecules to cell functions.
– Energy is released when a phosphate group
is removed.
– ADP is changed into ATP when a phosphate
group is added.
phosphate removed
4.1 Chemical Energy and ATP
Organisms break down carbon-based
molecules to produce ATP
• Carbohydrates are the most commonly
broken down to make ATPadenosine
triphosphate
– not stored in
large amounts
– up to 36 ATP
from one
glucose
molecule
tri=3
adenosine
di=2
diphosphate
4.1 Chemical Energy and ATP
• Fats store the most energy
– 80 percent of the energy in your body
– about 146 ATP from a triglyceride
• Proteins are least likely to be broken
down to make ATP.
– amino acids not usually needed for energy
– about the same amount of energy as a
carbohydrate
4.1 Chemical Energy and ATP
Chapter 4 Booklet
1. You are going to get 2 pieces of paper and fold them
in half like a book!
2. The front page is the title page! Write on this page
CELLS & ENERGY. Come up with some type of
picture for the title page.
3. Open the book up and number the pages 1-7.
4. We will staple the spine to keep it all together.
4.1 Chemical Energy and ATP
Page 1 & 2
1. Page 1: Title: ATP (write down the following then
transfer on to your booklet on page one.)
-Define ATP
-Define ADP
-How are ATP & ADP alike?
-How are they different?
2. Page 2: Title: ATP & ADP
-Draw, Label, & COLOR Figure 4.2 on page 101