Chapter 9: Photosynthesis!

Slides:

Advertisements

Similar presentations

PHOTOSYNTHESIS.

Advertisements

Relate the structure of chloroplasts to the events in photosynthesis

CHAPTER 6 - PHOTOSYNTHESIS

Photosynthesis. ATP Adenosine Triphosphate is the energy currency of the cell. It does not get destroyed (just like money), but cycles between 2 states.

The Working Cell: Energy From Sunlight Chapter 8

Photosynthesis  Is defined as…  A process by which light energy is converted into chemical energy  Where does this take place?  In the chloroplasts.

How Photosynthesis Works

Photosynthesis. What is it? Photo – light Synthesis – to make The process of converting light energy to chemical energy and storing it as sugar.

Photosynthesis Cellular Energy Unit Part I. Autotrophs  Producers  Photosynthesizing plants, bacteria, and some eukaryotic single celled organisms.

Bluff Light Reactions Calvin Cycle Aerobic Respiration Anaerobic Respiration Wild Card Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400.

PHOTOSYNTHESIS How plants use the sun’s energy to make sugar Occurs in the chloroplasts of plant cells I.The process is broken into 3 sets of reactions.

Photosynthesis and Chemosynthesis. Energy in a cell  Cells need energy to:  Grow  Reproduce  Live  Energy for these reactions can be stored in glucose.

Objective: To discuss light waves, how plants absorb light and describe how light dependent reactions occur. 8.2 notes.

Photosynthesis Photosynthesis. I. How do living things get the energy they need to live? Photosynthesis: The process by which plants (autotrophs) and.

Chapter 5 part 1 Photosynthesis. Energy in living systems -photosynthesis: the process of converting light energy into chemical energy -Autotrophs: make.

Photosynthesis Light Absorption Sun gives off visible light (ROYGBIV) Unabsorbed light reflects to our eyes –Most green light not absorbed by leaves.

What color does chlorophyll reflect? 2. What organisms can make their own energy (there are at least 4 correct answers)? Question of the Day.

Cell Energy: Class Notes 2 Photosynthesis Part 1.

Photosynthesis Overview video 3 mins Overview video 3 mins.

The Light-Independent Reactions (Dark Reactions) Chapter Pgs BUT FIRST! A review of yesterday’s Light-Dependent Reactions: Photosystems.

Photosynthesis. Trapping Energy from Sunlight Photosynthesis – is the process plants use to trap the sun’s energy and build carbohydrates, called.

DO NOW A tree begins as a seed, where does all the mass (the stuff that makes up the wood, and roots and leaves) come from?

Biology PHOTOSYNTHESIS REVIEW GAME. Question 1: What is the chemical equation for photosynthesis?

Photosynthesis Overview video Photosynthesis 3 mins Overview video Photosynthesis 3 mins.

Energy in Living Systems

Cell Energy: Photosynthesis & Respiration

Photosynthesis.

Relate the structure of chloroplasts to the events in photosynthesis

Energy in A Cell.

KEY CONCEPT Photosynthesis requires a series of chemical reactions.

Photosynthesis.

Quaestio: What happens during light dependent reactions?

PHOTOSYNTHESIS, Part Un

Unit 3 Test Review Trashketball.

Section Objectives Relate the structure of chloroplasts to the events in photosynthesis Describe light-dependent reactions. Explain the reactions and products.

Photosynthesis Chapter 8.

Photosynthesis Chapter 10.

Harvesting Light Energy

Bio: Announcements Take out coloring WS to be checked from last class if you did not get it stamped Work on chloroplast do now Note: I will be out of.

Photosynthesis Sun ~ ultimate source of energy for all living things.

Photosynthesis.

6CO2 + 6H2O + light energy  C6H12O6 + 6O2

Inside A Chloroplast.

Photosynthesis Food from light and air.

The Reactions of Photosynthesis

The Process of Photosynthesis

Photosynthesis Chapter 10.

Photosynthesis.

Photosynthesis.

KEY CONCEPT Photosynthesis requires a series of chemical reactions.

Photosynthesis.

6-1 Notes: Light Reactions

KEY CONCEPT Photosynthesis requires a series of chemical reactions.

Photosynthesis.

Photosynthesis light reaction

KEY CONCEPT Photosynthesis requires a series of chemical reactions.

Harvesting Light Energy

KEY CONCEPT Photosynthesis requires a series of chemical reactions.

Photosynthesis A process performed by autotrophs

9.2 Section Objectives – page 225

PHOTOSYNTHESIS Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies.

Photosynthesis!! Do Now (on handout)

Photosynthesis Biology 2 D. Mitchell.

PHOTOSYNTHESIS: Converting solar energy into chemical energy (SUGARS).

Photosynthesis.

How is energy from the sunlight transferred into chemical energy?

8.2 Photosynthesis: An Overview

Photosynthesis.

Converting Light Energy into Chemical Energy

8.2 Photosynthesis Honors Assessment

Presentation transcript:

Chapter 9: Photosynthesis!

6 H2O + 6 CO2 (and light)→ C6H12O6 + 6 O2 9.2 Photosynthesis Overall Summary: 6 H2O + 6 CO2 (and light)→ C6H12O6 + 6 O2 What’s missing from this picture?

How does Photosynthesis Happen? There are two main parts to photosynthesis Light-Dependent Reactions. Light-Independent Reactions (the Calvin Cycle).

Overview animation Really good animation ..\..\..\..\..\Cool Videos\Cells\MH_Photosynthesis http://www.cnr.vt.edu/DENDRO/forestbiology/photosynthesis.swf

Light-dependent reactions (summary) a. Convert light energy into chemical energy b. Chloroplasts have pigments (especially chlorophyll) that trap sun’s light. -Chlorophyll absorbs specific wavelengths (red and blue) - Chlorophyll reflects green c. This occurs in thylakoid membranes d. Final Products: ATP, NADPH. Also, Oxygen is byproduct.

The Chloroplast

Light dependent reactions (details) Light strikes chlorophyll and excites electrons, which leave chlorophyll. photolysis-- water is split, making… * electrons (to replace the ones chlorophyll lost) *oxygen gas * hydrogen ions. See next slide…

c. Electrons move to ELECTRON TRANSPORT CHAIN i. As electrons move along the chain they release energy that is used to pump hydrogen ions across the membrane. ii. This creates a hydrogen ion concentration gradient. iii. Hydrogen ions rush down their concentration gradient through ATP Synthase, making ATP. iv. At end of chain, electrons are passed to another chlorophyll.

d. light strikes chlorophyll and excites electrons. e. Second electron transport chain donates electrons to make NADPH (used in Light independent reactions later). Animationhttp://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter10/animations.html# http://vcell.ndsu.nodak.edu/animations/photosynthesis/movie.htm

Light-dependent Reactions Exit Questions What is the overall purpose of Photosynthesis? (2 points) What are the products of the Light-Dependent Reactions? (3 points) Explain the importance of concentration gradients and facilitated diffusion to the light-dependent reactions. (3 points)

An interesting connection to the light dependent reactions…. Fuel cell car (relates to splitting of water in the leaf) and other stuff Nova ScienceNOW http://www.pbs.org/wgbh/nova/sciencenow/archive/

Light- independent reactions (summary) Also called the Calvin Cycle Happens in stroma of chloroplast Use ATP and NADPH to produce glucose!!!

D. Light independent reactions (details) i. Rubisco (an enzyme) attaches CO2 to RuBP ii. ATP provides energy iii. NADPH provides electrons iv. Glucose is made v. RuBP is regenerated vi. The cycle continues… http://highered.mcgraw-hill.com/sites/0070960526/student_view0/chapter5/animation_quiz_1.html http://www.science.smith.edu/departments/Biology/Bio231/calvin.html http://faculty.nl.edu/jste/calvin_cycle.htm

Connections between light dependent and light independent reactions (Draw this!)

Overview animation Really good animation ..\..\..\..\..\Cool Videos\Cells\MH_Photosynthesis http://www.cnr.vt.edu/DENDRO/forestbiology/photosynthesis.swf

Howstuff works video: http://www. howstuffworks. com/search. php http://www.cnr.vt.edu/DENDRO/forestbiology/photosynthesis.swf