Test Review Chapter 5-Photosynthesis and Cellular Respiration

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Test Review Chapter 5-Photosynthesis and
Cellular Respiration
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1. What is an autotroph?

• An organism that makes their own organic
  molecules by using energy from inorganic
  molecules or the sun (photosynthesis)
• Sometimes called producers b/c they make their
  own food

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2. Give 5 examples of autotrophs.

• Plants, algae, some protists, bacteria, trees,
  grass, etc.

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3. What is a heterotroph?

• Organisms that get chemical energy for metabolism
  from autotrophs or other heterotrophs.
• Sometimes called consumers b/c they get
  food/energy from consuming others

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4. Give 5 examples of heterotrophs.

• Humans, animals, fungus, some bacteria, fish,
  birds, etc.

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5. How do autotrophs get their energy?

• photosynthesis

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6. How do heterotrophs get their energy?

• From organic molecules
• Through cellular respiration
• From breaking down food molecules

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7. What is photosynthesis?

• A process that takes place in autotrophs
  (producers) that converts light energy into
  chemical energy (plants capture energy and make
  organic molecules)

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8. Where does MOST energy on earth come from?

• The sun

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9. What molecule stores energy in our cells?

• ATP

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10. What does ATP stand for?

• Adenosine Triphosphate

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How does energy flow from the sun through the
living world? (List several ways)

• Plants capture sunlight and produce carbohydrates
  (glucose)
• Animals eat plants
• Animals eat other animals that have eaten plants

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How is energy required for life processes?
(This means How does our body need energy? To
do what?)

• growth and development
• movement
• transport of materials across the cell membrane

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13. What is cellular respiration?

• The process used to harvest energy in organic
  compounds

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14. List the chemical equations for
photosynthesis and cellular respiration and
compare them.

• Photosynthesis
• 6 CO2 6 H2O C6H12O6 6 O2
  
• Cellular Respiration

Light
Glucose (sugar)
C6H12O6 6O2 enzymes 6CO2 6H2O
energy (Glucose)

(ATP)
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15. Know what a balanced equation looks
like. Example Balance this equation.

• CH4 O2 ? CO2 H2O

2
2
C 1 C 1 H 4 H 2 O 2 O 3
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4
4
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16. How does energy move through the food chain?

• From autotrophs to heterotrophs

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17. What is an organic compound?

• A compound that contains carbon and is made by
  living things
• Ex- glucose