Question
click below
click below
Question
Normal Size Small Size show me how
Photosynthesis
Question | Answer |
---|---|
What pigment is primarily responsible for absorbing light in plants? | Chlorophyll a |
What is one factor that can affect the rate of photosynthesis? | Light intensity |
What are two main stages of photosynthesis? | light-dependent and light-independent reactions (Calvin Cycle) |
What is the role of the electron transport chain in photosynthesis? | It captures the energy from sunlight and uses it to create a proton gradient across the thylakoid membrane |
What is the general formula for photosynthesis? | Light + 6CO2 + 6H2O ---> C6H1206 + 6O2 |
With the photosynthesis experiment - how can we ensure that our results accurately reflect the effect of light color on photosynthesis? | By using a control group with normal light conditions |
With the photosynthesis experiment - what should the null hypothesis state regarding the effect of light color on photosynthesis? | Light color has no effect on the rate of photosynthesis |
How do pigments like chlorophyll contribute to photosynthesis? | They absorb light energy to excite electrons/provide energy |
In which part of the chloroplast do the light-dependent reactions take place? | Thylakoid membrane |
What is the primary role of chlorophyll in the light-dependent reactions? | To absorb light energy and initiate electron transport |
During the light-dependent reactions, what is produced? | ATP and NADPH |
What is the role of ATP and NADPH in the light-independent reactions (Calvin cycle)? | They are used to provide the energy needed to convert carbon dioxide into glucose |
Thinking of the photosynthesis lab, how does increasing light intensity affect the rate of photosynthesis? | It raises the rate until it reaches a maximum level |
Which pigment primarily absorbs red and violet light? | Chlorophyll a |
What technique is used to separate plant pigments? | Paper chromatography |
In which part of the chloroplast do the light-independent reactions take place? | Stroma |
What is the primary role of ATP and NADPH in the Calvin cycle? | Provide energy and reducing power for carbon fixation |
What are three variables that can affect the rate of photosynthesis? | Light intensity, CO2 concentration, and temperature |
What was the visual indication of the photosynthetic activity? | Oxygen producing, and pushing water level down the manometer |
In the Calvin cycle, what is the primary product formed? | Glucose |
Why do you see light emitted from separated chlorophyll? | It releases energy as light when electrons return to ground state |
What is the main purpose of the light-dependent reactions? | To convert solar energy into chemical energy |
What is the primary function of the Calvin cycle? | To fix carbon dioxide into organic molecules |
What is the significance of water in photosynthesis? | It provides electrons and protons for the light-dependent reactions |