Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
44 Cards in this Set
- Front
- Back
|
What is the goal of Photosynthesis
|
To procure duce and store high energy carbohydrates and other organic molecules.
|
|
|
What do reactions of Photosynthesis first produce?
|
ATP then other organic molecules
|
|
|
ATP is not stored in large amounts in cells. How many calories are in each mole of ATP and what molecules store more calories?
|
7 calories per mole.
Glucose has 680 calories per model Fats contain 2.5 tomes more calories than glucose. |
|
|
Van Helmont
|
1643
Increased mass of growing plant comes from water. Mass of water becomes mass of growing plant. |
|
|
Joseph Priestley
|
1771
Plants release oxygen (opposite of respiration Used a candle and mint sprig under a jar noting that the plant was giving burnable oxygen. |
|
|
jon Ingenhousz
|
1779
Light is necessary for plants to produce oxygen Noticed bubbles from aquatic plants |
|
|
Photosynthetic Equation
|
CO2+H2O+light ~> C6H12O6+ oxygen.
|
|
|
Samuel Ruben Experiment
|
Water enters through roots of plants.
CO2 enters the leaves through openings called stomata Oxygen and water are released through the stomata O2 comes from H2O |
|
|
Where is the chloroplast structure located
|
The mesophyl.
|
|
|
Palisade mesophyl
|
Contains the most chlorophyll
|
|
|
Spongy mesophyl
|
Primary gas exchange
|
|
|
Xylem/Phloem
|
Nutrients to plants
|
|
|
What do guard cells do when water is not very abundant?
|
They lose water closing the stomata/stoma helping the plant to keep in water. (opens during day to allow gas exchange)
|
|
|
Thylakoid membrane
|
Location if light reactions
|
|
|
Granum
|
Stack of thylakoids
|
|
|
Stroma
|
Fluid
Location of Colvin cycle |
|
|
Calvin cycle
|
Light independent cycle.
|
|
|
Stoma
|
The opening (stomata)
|
|
|
Electromagnetic spectrum
|
Diagram of light absorption
|
|
|
Pigments
|
Used for plants to absorb light from the electromagnetic spectrum
|
|
|
What are the main chloroplast
|
Chlorophyll A and B
|
|
|
What light does chlorophyll A and B absorb the best
|
400-475 nm and 600-700 nm
|
|
|
Chlorophyll A
|
Only pigment that directly participates in light reactions
|
|
|
Carotenoids and chlorophyll B
|
Accessory Pigments
|
|
|
Accessory pigment
|
Pigment that does NOT directly participate in Photosynthesis
They do however absorb colors of light chlorophyll A cannot and transfer the energy to chlorophyll A |
|
|
Green light
|
USELESS!
not absorbed by chlorophyll |
|
|
Phycocrythrin
|
yellow green light
|
|
|
Phycocyanin
|
Red yellow light
|
|
|
Carotene
|
Violet and a little bit of blue green light
|
|
|
Chlorophyll A
|
Violet and red
|
|
|
Chlorophyll B
|
Violet and red.
|
|
|
When do light dependant reactions occur?
|
When photons of light are absorbed by photosynthetic pigments
|
|
|
Photon
|
Particle of light
|
|
|
What does the absorption of light do to electrons
|
Boosts them to High energy States.
|
|
|
Where are the photosystems located and how many photosystems are pigment molecules arranged in
|
On the thylakoid membrane and two photosystems
|
|
|
Photosystem 1 absorbs...
|
Light with Wavelengths 700 nm (red)
|
|
|
Photosystem 2 absorbs...
|
Light with Wavelengths of 680 nm (lighter red)
|
|
|
Granum
|
Stack of thylakoids
|
|
|
Chloroplasts
|
Participates in Photosynthesis; contains thylakoids
|
|
|
Stroma
|
Fluid space surrounding thylakoids inside chloroplasts
|
|
|
Who is the Calvin Cycle named after.
|
Melvin Calvin who discovered the reactions.
|
|
|
What stage of Photosynthesis is the calvin cycle
|
The second stage, following light-dependant reactions
|
|
|
What are alternative reactions of the calvin cycle
|
Thermichemical Reactions
LIGHT INDEPENDENT REACTIONS carbon fixation reactions |
|
|
Light independent reactions
|
Do not require light but are more likely to occur I. Daylight when ATP and NADPH are available
Does require CO2 to enter leaf through open stomata Carbon is fixed aka incorporated into organic compounds |
