Living cells use chemical energy primarily found in carbohydrate molecules as their main source of energy, much of which is produced by photosynthesis. They release this stored energy through catabolism when they consume food and break down these molecules, fuelling necessary cell functions. This energy flow, described by bioenergetics, is essential to the cell's metabolism.
All living organisms use a source of energy for their metabolic activities. Living cells primarily use chemical energy found in carbohydrate molecules (food), the majority of which are produced through a process called photosynthesis. Through photosynthesis, organisms convert solar energy into chemical energy which is then used to create carbohydrate molecules.
Much of this stored energy is released when an organism consumes food and breaks down carbohydrate molecules, a process called catabolism. This energy provides the cells with the fuel they need to perform their necessary functions. For instance, cells import, metabolize, synthesize, and transport nutrients and other molecules needed for the cell's survival rates. This energy management is crucial for things like muscle growth, the breakdown of complex carbohydrates into simpler sugars for energy, and the transportation of signaling molecules like hormones and neurotransmitters.
Scientists often use the term bioenergetics to describe the flow of energy through living systems like cells. The building and breaking down of complex molecules occur through stepwise chemical reactions, some of which spontaneously release energy, while others require energy to proceed. All of these reactions, whether they use or release energy, are part of the cell's metabolism.
A key part of this process is glucose, a sugar that is the primary energy source for living cells. The first step in breaking down glucose for energy is a process known as glycolysis, which occurs in both prokaryotic and eukaryotic cells and does not require oxygen, making it anaerobic.
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Answer:
A or 1 which ever u have
Explanation:
Mitosis is vital for growth, repair and asexual reproduction by producing identical cells. Without mitosis, organisms would not be able to grow, repair, or fight diseases effectively.
The purpose of mitosis is to reproduce identical cells for growth and to replace worn-out cells. It enables an organism to grow and repair its tissues and organs by creating new cells with identical genetic information. If cells did not undergo mitosis, an organism would not be able to grow or heal. Fight against diseases, especially those that attack cells such as cancer, would also be greatly hindered without mitosis.
Mitosis ensures that each daughter cell gets an exact copy of the genetic material from the parent cell. This facilitates the primary roles of mitosis which include growth, repair, and asexual reproduction in some organisms.
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1. Their genes are being expressed differently
2. All your genes are present in your liver cells
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