11-26 Flashcards
What are the reactants for the photosynthesis reactions
Temperature,light and water
What are the products for the photosynthesis reaction
Glucose sugar and oxygen
How does a plant retain the reactants needed for photosynthesis?
During this reaction, carbon dioxide and water are converted into glucose and oxygen. The reaction requires light energy, which is absorbed by a green substance called chlorophyll.
What role is played by the hydrogen ions that were released from the water molecules?
To pump hydrogen ions into the stroma.
What is the main photosynthetic pigment of photosynthesis?
Chlorophyll
Explain why chlorophyll appears green in color
Green light is not absorbed but reflected, making the plant appear green.
What is the role of chlorophyll in photosynthesis?
Chlorophyll allows plants to absorb energy from light
Why is sunlight needed in photosynthesis?
Photosynthesis uses the energy of sunlight to convert water and carbon dioxide into high energy sugars and oxygen
Name the part of the leaf that is the primary region of photosynthesis.
Chloroplast
Explain what happens when sunlight hits chlorophyll molecules
The energy from the light excites an electron from its ground energy level
What is the name of the electron carrier in photosynthesis
nicotinamide adenine dinucleotide phosphate
What is the purpose of the light dependent reaction?
First stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP
Water molecules are broken down in the light dependent reactions. Name the three substances that are formed when water molecules are broken down
Hydrogen,oxygen electrons
What happens to the oxygen released from the water molecules?
oxygen atoms join to form molecular oxygen (O 2 ), a waste product of photosynthesis.
Describe what happens to the high-energy electrons that are produced by photosystem 1.
Eewdew
