When you draw back a bow and shoot an arrow, the arrow exhibits kinetic energy as it moves through the air. As you know, energy cannot be created or destroyed. Thus, trace the origin of the kinetic energy of the arrow as far back as you can
What will be an ideal response?
The kinetic energy of the arrow came from the stored potential energy of the pulled string of the bow. This potential energy in the string came about when you pulled the string taut with the movement of your hand and arm. The energy that you exerted to pull the string came from releasing the stored energy within food molecules through digestion and cellular respiration. The potential energy in the food molecules came either directly (as in food from plant material) or indirectly (as in food from animals) from the sun. The light energy from the sun was stored in a plant through photosynthesis and transferred down the food chain. Many students will stop here, but they could go on to explain that the energy in the light from the sun was the result of a nuclear reaction that released potential energy stored within the nuclei of hydrogen atoms of the sun, etc.
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The organelle that modifies , sorts, and package proteins is
a. rough ER b. ribosomes c. golgi complex
In the 20th century, scientists harnessed the natural metabolic reactions of bacteria to make ________ for the first time in an industrial setting
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