Photosynthesis and Cellular Respiration Photosynthesis What is Photosynthesis

Photosynthesis and Cellular Respiration

Photosynthesis

What is Photosynthesis? • Photosynthesis is the process by which plants turn INORGANIC water and carbon dioxide into an ORGANIC food molecule (glucose) in the presence of sunlight. • Photosynthesis happens in the chloroplast.

What you know already… • Do you have Chloroplasts? _____ • What organisms have them? • _____________ • What organic food molecule is produced through Photosynthesis? • _____________ • What is its formula? _____

Why is Photosynthesis important? • Makes organic molecules (glucose) out of inorganic materials (carbon dioxide and water) • It uses the energy from the sun • It begins all food chains/webs • ALL life is supported by this process which begins with SUNLIGHT • Plus…It also makes oxygen gas!!

Photosynthesis starts all food webs! The sun supplies energy for ALL living things!

Raw Materials needed for Photosynthesis Carbon Dioxide (CO 2) Sunlight (Energy) Water (H 2 O)

Products of Photosynthesis Glucose (C 6 H 12 O 6) Oxygen (O 2)

Chemical Reaction for Photosynthesis CO 2 + H 2 O C 6 H 12 O 6 + O 2 • What else is needed? ? ? _________ • When you see an arrow… What is present? • _________

What’s up with that Chloroplast? The Chloroplast contains the green pigment Chlorophyll The Chloroplast captures radiant energy and stores it in the bonds of GLUCOSE! So, what color are they? What does radiant energy mean?

THINK Bouncy Ball! Bouncing Ball

With EACH BOUNCE… • Every time the ball bounces… it loses energy • Pretend the ball is a ray of sunlight • The sunlight enters the chloroplast and bounces around • Each time it bounces – and loses energy -the chlorophyll absorbs that energy • The energy is used to change CO 2 + H 2 O into C 6 H 12 O 6! • THE MOST IMPORTANT SIMPLE SUGAR!

Why is Glucose SOOOO Important? • Glucose is needed by EVERY LIVING THING in order to make ENERGY! • The energy from the sun is stored in the bonds of glucose in s e n li e h t fa all o e e e r S u ? t e c l i u p c this se mole o Gluc Y line nd… o b R EVE sents a ores t e s r p d e n r o b Y R EVE y! g ener

And? • Glucose is needed by EVERY LIVING THING in order to make ENERGY! • How does the energy stored in the bonds of Glucose become usable for us? • BTW… What’s our energy molecule? _____ • Where is that molecule made? _____ • HOW is that molecule made? ? ? • Good question!

What is Cellular Respiration? Cellular Respiration is the process by which plants and animals release energy from Glucose. Cellular respiration happens in the mitochondria of plant cells and animal cells! What is the chemical formula for glucose? What is the chemical formula for oxygen?