KEY CONCEPT All cells need chemical energy. The cells of all organisms—from algae to whales to people—need chemical energy for all of their processes . Some organisms, such as diatoms and plants, absorb energy from sunlight. What is a diatom? What do they do with it?
KEY CONCEPT All cells need chemical energy.
MAIN IDEA: The chemical energy used for most cell processes is carried by ATP.
You are hungry. You need energy, so you grab what? A Snickers Bar? A Kit-Kat Bar?
Does this food that contains sugar and other Carbon-based molecules give you the energy that you need? How does it provide it to you, exactly?
All carbon-based molecules store chemical energy in their bonds!
A six-carbon sugar
made by plants during photosynthesis.
Used for energy!
How does ATP transfer energy from the breakdown of food molecules to cell functions?
ADP is a lower-energy molecule that can be converted into ATP by the addition of a phosphate group.
Food molecules are supplying the energy to ADD a phosphate group to ADP, converting it once again to ATP!
Fill in the Details Section in the table on your Power Notes!
Carbohydrates are the molecules most commonly broken down to make ATP.