Name_________________________________________
Unit 1 Lesson 6 Photosynthesis and Cellular Respiration
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Cells must capture and use ________________ or they will die.
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Without energy, living things cannot replace cells, build body parts, or ____________________.
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__________________ contains chemical energy that cells need to carry out life processes.
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_________________________make their own food. Most use energy from the sun. Some use
chemicals to make food.
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_________________________must eat other living things to get food. They may eat producers
or other consumers.
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_________________________get energy by breaking down dead organisms or wastes of other
organisms.
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_________________________ is a process by which plants use energy from sunlight, carbon
dioxide, and water to make sugars.
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__________________ is released into the air during photosynthesis.
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Photosynthesis takes place in organelles called ______________________.
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A green pigment called ______________________ in chloroplasts captures energy from
sunlight.
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This energy is used to combine carbon dioxide and water to form the sugar glucose and oxygen
gas.
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6CO2 + 6H2O + light energy → C6H12O6 + 6O2
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Plants store _________________________, which is a sugar that stores chemical energy.
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When organisms eat plants, they use the stored sugars for energy.
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Energy in sugars is stored in a molecule called _________________________________ (ATP).
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_________________________________ is the process of breaking down food to produce ATP.
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Cellular respiration takes place in the cytoplasm and cell membranes of
______________________________cells.
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In eukaryotes, cellular respiration takes place in organelles called ________________________.
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Glucose is first broken down into two 3-carbon molecules in the cytoplasm, releasing energy.
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Oxygen enters the cell and travels to the mitochondria.
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The 3-carbon molecules are broken down in the mitochondria, where energy is captured and
stored as ATP.
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The products of cellular respiration are chemical energy (ATP), carbon dioxide, and water.
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In many animals, carbon dioxide is carried to the ____________ to be released during breathing.
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Some of the energy produced during cellular respiration is released as _______________.
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Much of the energy produced is transferred to ATP.
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C6H12O6 + 6O2 → 6CO2 + 6H2O + chemical energy (ATP)
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Plants need ____________________________ for photosynthesis, and they release oxygen.
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During cellular respiration, other organisms use this oxygen and release carbon dioxide.
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Photosynthesis and respiration are linked, each depending on the products of the other.
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_________________________________________, which is respiration without oxygen, can
occur if there is not enough oxygen.
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____________________________________is a form of anaerobic respiration used by yeasts.
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The body uses anaerobic respiration during hard exercise. The
______________________________ produced makes muscles sore.