Photo & Respir. Quiz
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All living things obtain energy from sunlight. True or false
True
An organism that makes its own food.
Autotroph
An organism that cannot make its own food is called. Example:zebra
Heterotrophs
How does the sun supply heterotrophs with energy?
Heterotrophs get energy from eating plants or eat other animals that eat plants.
What is the 1st stage of photosynthesis?
• Capturing sun’s energy
What happens in the second stage of photosynthesis?
Water and carbon dioxide combine chemically to produce sugar, an oxygen is released
Where are the colored chemical compounds that absorb light called?
Pigments
What is the main photosynthetic pigment in chloroplast called?
Chlorophyll
Carbon dioxide enters and oxygen is released through these small openings on the underside of the leaves called
Stomata
What is the process by which cells break down sugar (glucose) and release the energy they contain called? It’s when energy is released from food.
Respiration
Where does the first stage of respiration take place?
Cytoplasm
What is the first stage of respiration?
Glucose is broken Devon into smaller molecules and energy is released.
What happens in the second stage of respiration?
The smaller molecules are broken down into smaller molecules and large amount of energy is released.
In what stage is oxygen used in respiration?
2nd stage
How do plants get rid of carbon dioxide and water vapor?
Through the stomata
What is the process when energy is released without using oxygen?
Fermentation
When will your body release energy using fermentation?
When you exercise to long or too hard.
What is the product of alcoholic fermentation?
Alcohol, carbon,and energy
What is the product of lactic acid fermentation?
Lactic acid
The process by which a cell captures energy in sunlight and uses it to make food.
Photosynthesis
Where does the second stage of respiration take place?
Mitochondria
Label the photosynthesis equation
6co2 +6H2O —> C6H12O6 O2