Section 4-1 ATP Section 4-1 ATP Write everything that is BLACK

Section 4-1Section 4-1“ATP“ATP””

Write everything that isWrite everything that is BLACKBLACK

4.1 Chemical Energy and ATP

4.1 KEY CONCEPT:4.1 KEY CONCEPT:All cells need chemical energy.All cells need chemical energy.


The chemical energy used for most cell The chemical energy used for most cell processes is carried out by ATP processes is carried out by ATP (adenosine triphopshate)(adenosine triphopshate)

Starch molecule

Glucose molecule

• Molecules in food store chemical energy in their bonds.Molecules in food store chemical energy in their bonds.


phosphate removed

• ATP transfers energy from the breakdown of ATP transfers energy from the breakdown of food molecules to cell functions.food molecules to cell functions.

– Energy is released when a phosphate group Energy is released when a phosphate group is removed.is removed.

– ADP is changed into ATP when a phosphate ADP is changed into ATP when a phosphate group is added.group is added.


Organisms break down carbon-based Organisms break down carbon-based molecules to produce ATPmolecules to produce ATP

• CarbohydratesCarbohydrates are the most commonly are the most commonly broken down to make ATPbroken down to make ATP– not stored in not stored in

large amountslarge amounts– up to 36 ATP up to 36 ATP

from one from one glucose glucose moleculemolecule

triphosphateadenosine

adenosine diphosphate

tri=3

di=2


• FatsFats store the most energy store the most energy– 80 percent of the energy in your body80 percent of the energy in your body– about 146 ATP from a triglycerideabout 146 ATP from a triglyceride

• ProteinsProteins are least likely to be broken are least likely to be broken down to make ATP.down to make ATP.– amino acids not usually needed for energyamino acids not usually needed for energy– about the same amount of energy as a about the same amount of energy as a

carbohydratecarbohydrate


Chapter 4 BookletChapter 4 Booklet

1.1. You are going to get 2 pieces of paper and fold them You are going to get 2 pieces of paper and fold them in half like a book!in half like a book!

2.2. The front page is the title page! Write on this page The front page is the title page! Write on this page CELLS & ENERGY. CELLS & ENERGY. Come up with some type of Come up with some type of picture for the title page.picture for the title page.

3.3. Open the book up and number the pages 1-7.Open the book up and number the pages 1-7.

4.4. We will staple the spine to keep it all together.We will staple the spine to keep it all together.


Page 1 & 2 Page 1 & 2

1.1. Page 1: Title: Page 1: Title: ATPATP (write down the following then (write down the following then transfer on to your booklet on page one.)transfer on to your booklet on page one.)

-Define ATP-Define ATP

-Define ADP-Define ADP

-How are ATP & ADP alike?-How are ATP & ADP alike?

-How are they different? -How are they different?

2.2. Page 2: Title: Page 2: Title: ATP & ADPATP & ADP

-Draw, Label, & COLOR Figure 4.2 on page 101-Draw, Label, & COLOR Figure 4.2 on page 101

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Section 4-1 ATP Section 4-1 ATP Write everything that is BLACK