Autotrophs, such as plants, use light to make their own food. What happens to the light absorbed by a plant during photosynthesis? (SC.912.L.18.9)

Question

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It is converted to kinetic energy
It is converted to chemical energy, which the plant stores.
It powers a reaction that produces carbon dioxide and water.
It powers a reaction that produces oxygen and carbon dioxide.
6. Daniel found the equation below in a textbook about cells. What process is described by this equation? (SC.912.L.18.9)

6CO2 + 6H2O + light energy → C6H12O6 + 6O2

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cellular respiration
fermentation
glycolysis
photosynthesis
7. The flow chart below shows a process that generates ATP. Where does this process take place within a cell? (SC.912.L.18.9)

Pyruvate + O2 → Krebs cycle → Electron transport chain
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Chloroplast
Mitochondria
Nucleus
Ribosome
8. A weightlifter is using heavy weights in short bursts for a competition. Because his muscle cells are not able to take in enough oxygen to make very much ATP the weightlifter begins to get fatigue in his muscles. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event? (SC.912.L.18.9)

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As the cells run out of oxygen they switch to anaerobic respiration, which allows the cell to make small amounts of ATP in the absence of oxygen.
As the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells.
The cells will never run out of oxygen if the weightlifter is breathing.
As the cells run out of oxygen, they will continue to make the same amount of ATP, since oxygen is not required to make ATP.
9. Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations? (SC.912.L.18.9)
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Only species Y is aerobic
Only species Y is anaerobic
Both species X and Y are aerobic
Both species X and Y are anaerobic

Answer 1

Here are the answers to your questions based on the content provided:

1. What happens to the light absorbed by a plant during photosynthesis?

   • Answer: It is converted to chemical energy, which the plant stores.

2. What process is described by the equation 6CO2 + 6H2O + light energy → C6H12O6 + 6O2?

   • Answer: photosynthesis

3. Where does the process described in the flow chart (Pyruvate + O2 → Krebs cycle → Electron transport chain) take place within a cell?

   • Answer: Mitochondria

4. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?

   • Answer: As the cells run out of oxygen they switch to anaerobic respiration, which allows the cell to make small amounts of ATP in the absence of oxygen.

5. Which conclusion can be made from the observations of species X and Y?

   • Answer: Only species Y is anaerobic.

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