1-131-13The chemical equation for splitting

water = 2H2O 4H+ + 4e- + O2

• Write the balanced chemical equation for photosynthesis.

• Write a chemical equation for the light reactions (does not have to be balanced).

Question of the DayQuestion of the Day

1-131-13

Quiz up to and including the light reactions (notes pages 1-7) on

Wednesday 1-19

AnnouncementAnnouncement

1-131-131. How are heterotrophs and

autotrophs different?

REVIEWREVIEW

2. Photosynthetic pigments …

3. What colors does a plant primarily use for photosynthesis?

How do you know?

1-131-134. Photosynthesis uses…

Photosynthesis produces…

ReviewReview

5. Where do the light reactions take place?

6. Why is the splitting of water molecules important for photosynthesis?

1-131-13ReviewReview

7. The light rxns use…

To produce…

8. What’s the electron transport chain?

DRAW!DRAW!Also label: thylakoid grana stroma

Admit SlipAdmit Slip

1-141-14

During the light reactions water is split apart into ____, ____, and ____

Question of the DayQuestion of the Day

Admit slip Question Admit slip Question sheetsheet

QUICK TALKQUICK TALKLight Reactions

Glucose

Chloroplast

Autotroph

Chlorophyll

Chemosynthetic bacteria

Thylakoid

Carbon dioxide

Photosynthesis

Producer

Stroma

Heterotroph

NADPH

Light ReactionsLight Reactions

What happens during step # 1 above?

Chlorophyll absorbs light energy and its electrons become excited and move to the electron transport chain

What happens during steps # 2-3 above?

The excited electrons move through the proteins of the electron transport chain

What happens during step # 4 above?

Light excites electrons on Photosystem I (accessory pigments)

Light ReactionsLight Reactions

What happens between steps 4 and 5 above?

The excited electrons move through the proteins of the electron transport chain

What happens during step # 5 above?

NADP+ and H+ are combined to form NADPH

Light ReactionsLight Reactions

SummarySummary

Explain what’s going on with protons above:1. _____ splits apart producing PROTONS, electrons, and oxygen.2. Protons can only leave the thylakoid through an _____________________________. The movement of protons through this carrier protein provides the energy needed to form _____ from __________.3. Some of the protons are pumped back into the thylakoid and some are used to make ________ from NADP+ and H+.

H2O

ATP producing carrier protein

ATP ADP + P

NADPH

1-201-20

4 things you know about photosynthesis are…

Question of the DayQuestion of the Day

Summarizing AssignmentSummarizing Assignment

1-191-19

Quiz up to and including the light reactions (notes pages 1-7) on

Friday 1-21

AnnouncementAnnouncement

1-191-19Photosynthesis uses…

Photosynthesis produces…

ReviewReview

Where do the light reactions take place?

Why is the splitting of water molecules important for photosynthesis?

1-191-19ReviewReview

The light rxns use…

To produce…

What’s the electron transport chain?

During the light reactions water is split apart into ____, ____, and ____

1-191-19AssignmentAssignment

1st – Using a laptop (partner optional) complete the self check quiz for Chapter 6 Section 1 – you must show me when you get a 100% my.hrw.com

2nd – Complete #s 1-4 on page 118