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25 Cards in this Set
- Front
- Back
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Organisms fall into one of two categories depending on how they obtain energy:
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Autotrophs & Heterotrophs
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autotrophs
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organisms that produce their own organic molecules for energy and nutrition using energy from light or from inorganic chemical sources
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Heterotrophs
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organisms that obtain energy and nutrients by absorbing or ingesting other organisms
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One thing that ties all things together is:
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energy - they all need it to survive
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Where do plants obtain energy from?
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Plants obtain energy from the sun
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the characteristic to learn forward toward the sunlight is
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tropism
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photosynthesis
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the process by which plants and certain other organisms use the energy of sunlight to convert carbon dioxide and water into sugar and oxygen
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Once the sunlight reaches the leaves of the fern, the process of _____________ kicks in and produces molecules of glucose in large quantities.
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photosynthesis
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the light energy that becomes chemical energy is what ferns and most other _________, such as these _________, need to live.
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autotrophs, sunflowers
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omnivore
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an organism that eats both plants and animals
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carnivore
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an animal that eats other animals
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herbivore
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an organism that eats only plants
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lat molars can grind up
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leaves and crunchy vegetables.
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The pointy canines and sharp ________ can tear meat into pieces.
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incisors
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an _______ or a crocodile can go for many months without eating
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anaconda
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Carnivorous __________, such as flatworms, seek out and consume meat.
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heterotrophs
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Most organisms use cellular ___________ to make usable energy.
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respiration
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different kinds of molecules:
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fats, carbohydrates, proteins, nucleic acids
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an organism's body must transfer the energy stored in those molecules into ___, the energy that cells can use.
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ATP
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ATP
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adenosine triphosphate (uh-DEH-nuh-seen triy-FAHS-fayt)
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adenosine triphosphate (uh-DEH-nuh-seen triy-FAHS-fayt)
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ATP; the molecule that delivers usable chemical energy for almost all processes and reactions that a cell must undergo to survive
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Recall that during cellular respiration, cells transfer the energy in _______to the energy in ATP. Each cell must make its own ___; to do so, it needs the starting component of glucose.
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glucose, ATP
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Cellular Respiration
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the energy in glucose is transferred to ATP
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Most other organisms (other than plants) get energy from ______ other ________.
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eating, organisms
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Cells _______ the energy in glucose _________to the energy in ATP molecules, which cells then use to drive various _______________ mechanisms.
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transfer, molecules, life-sustaining
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