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Metabolism and Spontaneity

This section delves into spontaneous processes, highlighting that they can occur without energy input, exemplified by ice melting. Spontaneous processes are energetically favorable and vital for metabolism. Cell metabolism encompasses all chemical reactions within an organism, ceasing upon reaching equilibrium, indicating cell death. Plants illustrate this with chloroplasts, converting solar energy into chemical energy through exergonic reactions, facilitating endergonic reactions that synthesize glucose. These reactions are crucial for the energy dynamics of the cell.

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Metabolism and Spontaneity

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  1. Metabolism and Spontaneity Chapter 6 Section 2 Ann, Kameron, and Maddie

  2. What is a Spontaneous Process? • A process that can occur without an input of energy • Example: ice melting • Spontaneous is also known as energetically favorable • A spontaneous reaction requires NO energy

  3. What is the Metabolism of a Cell? • The totality of an organisms chemical reactions • If a cell reaches equilibrium, its metabolism has stopped, meaning the cell has died

  4. Example in Action • Plants use chloroplasts to get chemical energy from the sun • They use this energy and through a series of exergonic reactions make endergonic reactions(chemical reactions) • This is shown by the use of this energy to create Glucose which is stored by the plants

  5. To answer the question... • Spontaneous reactions create exergonic reactions that store energy. • These reactions create energy for the cell. • The energy produced by these reactions is used in endergonic reactions, which are reactions in the cell that need energy in order to take place, such as metabolism.

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