Grab a lab packet, read the Background blurb and answer the Pre-Lab questions. 2/24/15...

Admit Slip

Grab a lab packet, read the

Background blurb and answer the Pre-

Lab questions.

2/24/15

Date: 2/24/15 Topic: Photosynthesis Page # ___

Today in Room 315…ADMIT SLIP: Answer the pre-lab questions

HW: Finish the lab packet and answer the assessment ?sCONTENT OBJ: SW investigate the variables affecting photosynthetic rate using inquiryLANG. OBJ: SW write a letter to local farmer’s with their findingsANNOUNCEMENTS: Chapter Test on Friday!AGENDA:Review ASRead through Lab IntroDemo GizmoComplete GizmoEXIT SLIP: All computers away and plugged in

Date: 2/24/15 Topic: Photosynthesis Page # ___

Photosynthesis Gizmo

Virtual lab experience

Allows you to run scientific experiments in MUCH less time

Watch DEMO

www.explorelearning.com

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

Admit Slip

Do you think plants go through

cellular respiration? Why or why not?

2/24/15

Date: 2/24/15 Topic: 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. & photosynLANG. OBJ: SW write notes in their journalsANNOUNCEMENTS: Chapter Test Friday!AGENDA:Admit slip share outWatch video on photosyn.Photosyn notesWatch video on photosyn/cellrespEXIT SLIP: 3-2-1

Date: 2/25/15 Topic: Photosynthesis Page # ___

Photosynthesis Video

https://www.youtube.com/watch?v=i8c5JcnFaJ0 ( 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 C6H12O6 (glucose)

How do they get the materials needed?

Plant Structure*

k

Leaves = collect

sunlight

Roots = collect water & nutrients

Stomata = exchange

gas (CO2 & O2)

Photosynthesis*

The process by which green plants, some bacteria, and some protists use sunlight

energy, water, and carbon dioxide to produce glucose and oxygen

6CO2 + 6H2O + Energy C6H12O6 + 6O2

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 H2O 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 CO2 and synthesize (create) C6H12O6 (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

https://www.youtube.com/watch?v=i8c5JcnFaJ0 (start at 9:30)

Cell Resp & Photosyn.

How do they relate?

https://www.youtube.com/watch?v=eo5XndJaz-Y