Photosynthesis Flashcards
Chlorophyll A & B absorb what wavelengths of light best ?
Blue
Violet
Red
Plants “looks” green because ?
Chlorophyll reflects green light
Organisms like green plants that make their own food using energy from the sun are called ?
Autotrophs
What is the gel filled space inside the chloroplast surrounding thylakoid stacks called ?
Stroma
What contains chlorophyll and absorbs light energy during what reaction ?
Photosystems 1 & 2 absorb light energy during light dependent reactions
What space is found during the light dependent reactions when H+ ions build up when what splits ?
Thylakoid space and when Water molecules are splits
Where are the enzymes for the light dependent reactions found in ? While the calvin cycle happens in what ?
Reactions are found in the THYLAKOID MEMBRANE while the Calvin Cycle happens in the STROMA
What are the stacks found inside chloroplasts ?
Grana
Who used a bell jar, candle, and plant to show plants give off something that candles need to burn ?
Joesph Priestly
Carbon and oxygen from what ends up as a part of what molecule following the Calvin Cycle ?
Carbon Dioxide
Glucose Molecule
What is made during which light reaction and carries energy and high energy electrons that are used during the Calvin Cycle to produce what like glucose ?
ATP and NADPH are produced during Light Dependent reactions
Sugars like glucose
What gas in the O in H2O is given to the atmosphere when water is split during the light dependent reactions?
Oxygen gas
What proteins in living things help chemical reactions happen ?
Enzymes
What is used to transfer electrons along the membrane from Photosystems 1 & 2 ?
Electron Transport System
What is caused when the movement of H+ ions from the thylakoid space across the membrane and into the stroma to spin and produce ATP ?
ATP synthase
Who showed that plants only produce oxygen when exposed to light ?
Jan Ingenhousz
Who carefully measured the mass of a growing plant and concluded the increase came from water ?
Jan Van Helmont
What are orange and yellow pigments called to absorb different wavelengths of light and help chlorophyll use more of the sun’s energy ?
Carotenoids
What is ATP ?
releases energy stored into high energy
What is a thylakoid?
flattened stacks that are the place of light reactions
What is NADP+ ?
Temporarily stores energized electrons produced during light reactions
What is ATP synthase?
Large proteins that uses energy from H+ ions to bind ADP and a
phosphate group together to produce ATP
What is the Calvin Cycle ?
Two stages of photosynthesis, its a series of chemical reactions that occur in the stroma of chloroplasts, produced by light reactions to make the energy rich sugar molecule
Difference between Autotrophs and Heterotrophs
Autotrophs - makes their own food/energy
Heterotrophs - gets food from other organisms
Relationship between pigments and chlorophyll
Pigments absorb light and chlorophyll is the green pigment
How is the light dependent reactions different from the Calvin Cycle
Light dependent uses energy from the sun to produce ATP and NADP and Oxygen gas
Calvin Cycle doesn’t require light and uses ATP and NADPH to produce glucose
What compounds are formed from Carbon dioxide in the Calvin cycle
Sugars
Lipids
Amino Acids
etc
Molecules that collect light energy
Pigments
