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17 Cards in this Set
- Front
- Back
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sun
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Is the ultimate source of energy on earth.
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Energy
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is the capacity to do work and is critical to all life on earth.
Energy powers every activity from breathing, thinking, and running to building the molecules that make up our bodies. cannot be created and humans obtain it from consuming food is something that we use up over time, when energy is transferred from food or fuel to the organisms it is not destroyed, but it is converted from one form to another. |
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Chemical energy
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is potential energy stored in the bonds of biological molecules, such as glucose (simple sugar) or carbohydrate.
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Potential Energy
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stored chemical energy
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kinetic energy
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energy for motion or movement.
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example:
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A cyclists who eats a cereal bar before an uphill ride, takes in stored chemical energy (carbohydrates) in cereal bar, then digestion breaks down the chemical bonds and releases energy (ATP) which is used to contract muscles and generate heat while cyclist rides uphill.
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Photosynthesis
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is the process by which plants use the energy of sunlight to make glucose and produce oxygen using carbon dioxide (CO₂) and water.
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Chloroplast
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is an organelle in plant and algae cells where photosynthesis occur
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chlorophyll
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is the molecule in the chloroplast that absorbs and reflects light
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photosynthesis photo step
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when chloroplast captures the energy of sunlight in chemical form (ATP). During the process water is split, releasing oxygen as by-product.
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photosynthesis synthesis step
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the captured energy is used to convert carbon dioxide (CO₂ from atmosphere) into energy-rich glucose molecules (sugar).
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photosynthesis equation
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Sunlight + Water + Carbon dioxide = Oxygen + Glucose
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Autotrophs (self-feeder)
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are organisms such as plant, algae, and some bacteria (cyanobacteria) that capture the energy of sunlight by photosynthesis and obtain their own food.
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plants make
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glucose (simple sugars) which is the major product of photosynthesis. Glucose is a chemical energy and it is used for a variety of metabolic reactions in the cell.
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It is estimated that marine plants produce between
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70 and 80 percent of the oxygen in the atmosphere.
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Algae are
Most live in |
single celled and some algae are multicellular. In single celled algae, there are a bunch of single cells trying to look like a big plant, but they are really individuals
There are more than7,000 different species the oceans, but they also live in fresh water and even on land. |
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Green algae
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are more closely related to land plants than any other type of algae (red, brown, etc).
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