Chapter 5- Key Terms And Concepts Flashcards
Explain the transformation of energy during photosynthesis.
Plants capture kinetic energy in sunlight and convert it to potential energy in covalent bonds of glucose and other carbs
What type of reaction is photosynthesis?
Redox reaction
What molecule is reduced and what molecule is oxidized in photosynthesis?
CO2 is reduced
H2O is oxidized
What do plants use glucose for?
Growth
ATP generation
Produce cellulose
How do plants store excess carbs?
As starch or sucrose
Which came first? Heterotrophs or autotrophs?
Heterotrophs
What molecules make up Earths atmosphere?
78% Nitrogen
21% Oxygen
1% Trace gases
What is the primary photosynthetic pigment in plants?
Chlorophyll alpha
What light is absorbed by Chlorophyll A?
Violet and red light
What light is best absorbed by chlorophyll B?
Blue and orange light
Through what do plants exchange gases?
Stomata
What is the gelatinous substance in chloroplast?
Stroma
What do photo systems consist of?
Antenna pigments and a reaction center
What is an autotroph
An organism that makes organic matter from something inorganic
What are the two reactions that happen in photosynthesis?
Light and Carbon reactions
What does a light reaction produce?
ATP and NADPH
Which photosystem comes first?
Photosystem 2
Photosystem 2 uses chlorophyll A and what other molecule?
Water
What is the waste product of photosystem 2?
Oxygen
The movement energy throughout the ETC powers what process?
Phosphorlyation
The coupling of proton gradient and ATP formation is called?
Chemiosmotic Phosphorlyation
Electrons from photosystem 1 reduce NADP+ to what?
NADPH
Carbon reactions use _____ and electrons from _____.
- ATP
- NADPH
What catalyzes a carbon reaction?
RuBisCo
