When you flex your muscles you are contracting them. When your muscle fibers gain tension through Actin and Myosin crossbridge cycling they may shorten due to the tension. This is called muscle contraction
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Note taking and color coding have improved and helped me with my courses. I could improve them by using flashcards and visual information. I could use pictures in my notes to help me visualize the answer better.
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The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body (bulb) is used for storing energy, not photosynthesis. Each plant cell has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole
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Answer is A. Discussing issues with parents
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