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Section 2 Assessment & Brainpop: Photosynthesis & Cellular Respiration

7th Grade Study Guide for photosynthesis and cellular respiration.

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What happens during respiration?
Cells break down simple food molecules such as sugar and release the energy they contain. (Obtain energy)
What is the equation for respiration?
C6H12O6+ 6O2----> 6CO2+ 6H2O+ energy
How is the equation for respiration different than the equation for photosynthesis?
The equation for respiration is the opposite of the equation for photosynthesis.
Explain why cellular respiration adds carbon dioxide to the atmosphere, but photosynthesis does not.
Organisms use oxygen and gives carbon dioxide (CO2) in respiration, but in photosynthesis, plants use CO2 and give oxygen.
What's the process in which cells obtain energy without using oxygen?
How would athletes be affected by fermentation if it didn't take place?
Their muscles will feel weak and sore, and they would be out of breath.
Would fermentation more likely occur during a short run or a long walk?
Fermentation would most likely occur in a short run because your leg muscles would be pushing hard on the ground, and you would be breathing quickly.
What do the respiratory system and respiration have in common?
They have oxygen in common.
What are the chemical products of respiration?
Carbon dioxide, ATP(energy), & water
What is ATP?
An energy-packed molecule that powers living cells.
Where does cellular respiration occur?
In almost all animals and plants.
Where does your body get rid of the carbon dioxide produced by respiration?
Through your lungs.
Where does cellular respiration take place?
In the mitochondria.
What produces more energy: Aerobic respiration or fermentation?
Aerobic respiration.
Where do you get the glucose we need to power our cells?
By eating.
In fermentation, what do cells use instead of oxygen to break down glucose?
carbon dioxide
Do yeasts use anaerobic respiration or aerobic respiration to produce energy?
Anaerobic respiration.
How does plant nutrition differ from human nutrition?
Plants make their own food; humans must consume theirs.
What do plants gain energy from?
What would happen if plants couldn't produce glucose?
They could not grow or function.
What is the main function of xylem within a plant?
It transports water and nutrients from the roots to the leaves.
Where would you look if you were looking for a plant's chloroplasts?
You would look in its palisade and spongy cells.
Chlorophyll and the melanin in your skin is pigment. What is pigment?
A substance that contains color.
What is most similar to stomata in plants?
Lungs and airways.
Where does chlorophyll store energy from sunlight?
Chemical energy.
In photosynthesis, water molecules are split into __________ and __________ atoms.
Hydrogen, oxygen