Monday, Nov. 18 Video clip Book activity: Intro to photosynthesis Explain sub activity for tomorrow
Cycles in everyday life Water Carbon Life Nitrogen Food Light/energy
Text book Page 226-228 Questions 1-2 Page 230-234 Questions 1 & 3a
Photosynthesis 8.1/8.2 Notes Wednesday, Nov. 20 Photosynthesis 8.1/8.2 Notes Introduce gizmos Gizmo lab
Energy and Life Energy is the ability to do work Forms: light, heat, and electricity. Can be stored in chemical compounds. ATP= adenosine triphosphate Basic energy source for all cells ADP= adenosine diphosphate Only two phosphate groups, stores energy
Uses Active transport (protein pumps) Synthesis of proteins Responses to chemical signals
Heterotrophs and Autotrophs Heterotrophs- obtain food by consuming other living things Autotrophs- obtain food by making their own. Photosynthesis- convert light energy into chemical energy
Chlorophyll Pigments- light-absorbing molecules Chlorophyll- pigment in plant Absorb light in the blue-violet and red regions Reflect green light- that’s why they look green
Chloroplasts Chloroplasts- place where photosynthesis takes place Thylakoids- saclike membrane, inside chloroplasts, arranged in stacks= grana
Electrons Light energy absorbed by chlorophyll, transferred to electrons
Overview of photosynthesis Reaction: 6CO2 + 6H2O C6H12O6 + 6O2 Carbon dioxide plus water, light- yields sugar and oxygen
Light-dependent reaction First set of reactions- require direct involvement of light and light-absorbing pigments Uses energy from the sun to produce ATP Takes place in the thylakoid Water required as source of electrons and H ions. Oxygen released as byproduct
Light-independent reaction ATP and NADPH molecules produced in the light reaction are used to produce sugars from CO2 absorbed from the atmosphere Takes place in the stroma, liquid outside the thylakoid
Leaf structure/function Thursday, Nov. 21 Review gizmos Leaf structure/function Stomata lab
Leaf Anatomy Location of Photosynthesis Veins- phloem and xylem Guard cells- allow CO2 in, O2 out.
Quick video leaf structure