Multiple Choice
Which source of energy is primarily used for short bursts of activity in cells?
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7. Energy and Metabolism
Introduction to Energy
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Why do cells need energy?
A
To carry out essential life processes such as growth and repair
B
To perform cellular respiration
C
To maintain their shape
D
To produce waste products
Verified step by step guidance1
Cells require energy to perform essential life processes, which include growth and repair. These processes involve synthesizing new molecules and structures, which are energy-intensive activities.
Energy is crucial for cellular respiration, a process where cells convert nutrients into usable energy in the form of ATP (adenosine triphosphate). This energy is then used to power various cellular functions.
Maintaining cell shape is another energy-dependent process. Cells use energy to produce and maintain cytoskeletal structures, which provide support and shape to the cell.
Energy is also needed for the production and excretion of waste products. Cells must actively transport waste out of the cell to maintain homeostasis, which requires energy.
Overall, energy is vital for cells to sustain life, perform metabolic activities, and adapt to their environment.
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