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34 Cards in this Set

  • Front
  • Back
Photosynthesis
6 Carbon Dioxide+ 6 Water --> sunlight --> glucose + 6 oxygen
Cuticle (produced by and function of)
Upper epidermis to protect leaf from water loss
Palisade Parenchyma
Site containing chloroplasts
Stroma
Fluid-filled region of chloroplast
Grana
Stacks of thylakoids
Thylakoids
Contain chlorophyll
Spongy Parenchyma
Allows for diffusion of gases within the leaf
Vascular Bundles include
Xylem and Phloem
Location of stomates
Lower epidermis
Stomates
Allow for gas exchange and transpiration
Guard cells
Control opening and closing of stomates
Light Reactions
Photosystems
Dark Reaction
Calvin Cycle
Photons
Light energy units
What is produced by light reactions?
-Energy in form of ATP
-Electron carriers (NADPH)
3 Important pigments found in the antenna complexes (AKA the antenna pigments)
Alpha chlorophyll, beta chlorophyll, and carotenoids
Reaction Center
The only molecule capable of transforming light energy to chemical energy
Photosystem I
P700
Photosystem II
P680
Phosphorylation
When light energy is used to make ATP
Photolysis
The process through which water is split into oxygen, hydrogen ions and electrons
Role of NADP in Noncyclic Phosphorylation
Final Electron Acceptor (becomes NADPH)
Where do the light reactions occur?
In the Thylakoid lumen
3 Points about Noncyclic Phosphorylation
-P680 captures light and passes excited electrons down an electron transport chain to produce ATP
-P700 captures light and passes excited electrons down an electron transport chain to produce NADPH
-A molecule of water is split releasing electrons, hydrogen ions and oxygen
3 Points about Cyclic Phosphorylation
-P700 captures light and passes excited electrons down an electron transport chain to produce ATP
-NADPH is not produced
-Water is not split
Carbon Fixation/Calvin Cycle
The carbon dioxide from the air is converted into carbohydrates (glucose usually)
Location of the Carbon Fixation reactions
Stroma of the leaf
RuBP
The 5C molecule that carbon dioxide combines with to make an unstable 6C
C3 Pathway
Normal Calvin Cycle/Carbon fixation
C4 Pathway
Works really well in hot, dry climates
3 Important Facts About Dark Reaction
-Calvin cycle occurs in stroma of chloroplasts
-ATP and NADPH from light reactions are necessary for carbon fixation
-CO2 is fixed to form glucose
More Info on C4 Pathway
See Alex or p.76 :)
More Info on CAM Photosynthesis
See Alex or p. 76 :)
Photorespiration
The pathway that leads to the fixation of oxygen (Making CO2 fixation less efficient)