Photosynthesis & Energy

PLANTSalso known as

Producers – Autotrophsmake their own food

throughPHOTOSYNTHESIS

6H2O + 6CO2 C6H12O6 + 6O2

Reactants products

Plants use reactants to make sugar for energy and growth

Conservation of mass: reactants are not destroyed, just change form

Plants get….Water from the soil through

roots&

CO2 from the air through leaves

to make glucose

Check yer understanding….

Plants are called producers…why?Where do producers get their energy from?What is a synonym for producer?What are the REACTANTS in photosynthesis?What are the PRODUCTS in photosynthesis?Where do plants get water from?What sugar do plants make?What is the chemical formula for glucose?

ATP (Adenosine

triphosphate)is the energy used

by living cells

ATP three phosphates bound

together

P~P~P

Energy is stored in the bonds

When a phosphate is losta great amount

of energy is releasedand becomes

ADP(adenosine diphosphate)

ATP releases P = ADP

ATP is like a rechargeable batteryADP is like a dead battery

Check yer understanding….

What is your cell’s “energy molecule” called?

Where is the energy in ATP stored?What is the ultimate source of all energy

on earth?How is ATP’s energy released?

Photosynthesis is

Production of chemical energy

(ATP)

from light energy

Photosynthesis

takes place in chloroplastscontaining pigment

chlorophyll

PhotosynthesisHas 2 reactions

One requires lightOne does not require light

Light dependent rxns makes ATP in thylakoid membrane

ATP goes to the

Light independent (dark) rxns

to make sugar in the stroma

Check yer understanding….

In what organelle does photosynthesis take place?

What are the two reactions of photosynthesis called?

In what reaction is ATP MADE?In what reaction is ATP BROKEN DOWNIn what reaction is sugar MADE?