Grab a lab packet, read the Background blurb and answer the Pre-Lab questions. 2/24/15 Date:2/24/15Topic:PhotosynthesisPage # ___

Today in Room 315… ADMIT SLIP: Answer the pre-lab questions HW: Finish the lab packet and answer the assessment ?s CONTENT OBJ: SW investigate the variables affecting photosynthetic rate using inquiry LANG. OBJ: SW write a letter to local farmer’s with their findings ANNOUNCEMENTS: Chapter Test on Friday! AGENDA: Review AS Read through Lab Intro Demo Gizmo Complete Gizmo EXIT SLIP: All computers away and plugged in Date:2/24/15Topic:PhotosynthesisPage # ___

Photosynthesis Gizmo Virtual lab experience Allows you to run scientific experiments in MUCH less time Watch DEMO

Click: Log In (upper right corner) Username: tbaGIZMO Password: tbaGIZMO Click: Teacher: James Louis Photosynthesis Lab- Launch Gizmo Set up “Control” setting, and begin! Note: Use Internet Explorer. Chrome may not work!

Homework Finish the lab packet (ALL of it!)- due TOMORROW Answer the multiple choice assessment questions packet (separate from lab packet) ALSO DUE TOMORROW

Do you think plants go through cellular respiration? Why or why not? 2/24/15 Date:2/24/15Topic:Photosynthesis Cont.Page # ___

Today in Room 315… ADMIT SLIP: Do plants go through cellular respiration? HW: Study notes for tomorrow! (Make a study guide!) CONTENT OBJ: SWBAT recognize and explain the similarities/differences between cell resp. & photosyn LANG. OBJ: SW write notes in their journals ANNOUNCEMENTS: Chapter Test Friday! AGENDA: Admit slip share out Watch video on photosyn. Photosyn notes Watch video on photosyn/cellresp EXIT SLIP: Date:2/25/15Topic:PhotosynthesisPage # ___

Photosynthesis Video ( start at 9:30)

All Life Needs Energy* Plants are producers, animals are consumers. Explain? Animals are heterotrophs, meaning… They get their energy from “eating others” (hetero = other) Plants are autotrophs, meaning… They produce their own energy (auto = self)

Plants need energy Can’t eat other plants! So, need the sun to collect light energy  chemical energy Need to obtain nutrients from environment to build bigger energy molecules ex. CHNOPS  C 6 H 12 O 6 (glucose) How do they get the materials needed?

Plant Structure* k Leaves = collect sunlight Roots = collect water & nutrients Stomata = exchange gas (CO 2 & O 2 )

Photosynthesis* The process by which green plants, some bacteria, and some protists use sunlight energy, water, and carbon dioxide to produce glucose and oxygen 6CO 2 + 6H 2 O + Energy  C 6 H 12 O 6 + 6O 2

Two Part Process* 1. Light Reactions: Requires light; converts light energy to chemical energy Occurs in the thylakoid membrane (see above) Collects light energy and forms ATP & NADPH Oxygen produced

Light Reactions* Light energy from the sun stimulates a protein (called a “photosystem”) in the thylakoid membrane to split H 2 O molecules into oxygen and hydrogen ions Oxygen is released (byproduct) Hydrogen ions  protons (H+)  available for electron transport chain

Light Reactions* Use an electron transport chain just like in cellular respiration! Light energy and a proton (H+) gradient use ATP synthase to produce ATP (light  chemical energy) Both of these systems (cellular respiration & photosynthesis) have ETCs, because they were both derived from the same primitive ancestor! Cell resp: ETC in mitochondria w/ electron carrier NADH, Photosyn: ETC in chloroplast w/ electron carrier NADPH

Two Part Process* 2. Light-independent Reactions (Calvin Cycle) Does not require light, but DOES require the product of the light reaction (ATP) Takes place in the stroma of the chloroplast Uses ATP & NADPH to reduce CO 2 and synthesize (create) C 6 H 12 O 6 (glucose) NOT called the dark reactions because CAN occur in light (just doesn’t need to)

Making connections… How are they related? Cellular Respiration ^ Photosynthesis ^

Photosynthesis Video (start at 9:30)

Cell Resp & Photosyn. How do they relate?