4-1 ATP

Section 4-1
Write everything that is
4.1 Chemical Energy and ATP
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
– not stored in
large amounts
– up to 36 ATP
from one
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
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

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