DQ #1. Explain the difference between aerobic metabolism and anaerobic metabolism.
Aerobic metabolism occurs in the cell’s mitochondria and requires oxygen, anaerobic metabolism occurs in the cytoplasm and it does not require oxygen. During aerobic metabolism the hydrogen and carbon molecules from dietary fats, proteins, and carbohydrates are mixed with oxygen to form carbon dioxide and water as energy is released. These end products that are produced during aerobic metabolism are to some extent harmless and simply eliminated from the body. The citric acid cycle, sometimes called the Krebs cycle, provides the final common pathway for the aerobic metabolism of nutrients. The electron transport system is where oxidation of electrons from the hydrogen atoms generated during glycolysis and the Krebs cycle take place. The electrons are used to reduce oxygen, which combines with …show more content…
Describe the steps to generate "membrane potential".
Membrane potentials are potentials that occur at the cell membrane. The electrical potentials occur in the membranes of most cell in our body. These potentials consist of the flow and movement of ions in water. The movement of the ions cause the membrane potential to change because it is required for the generation and conduction of nerve impulses and muscle contraction, such as when we want to walk. Changes in membrane potential are also required for different types of cells, such as glandular cells, to aid in hormone secretion.
There are two main factors that make the membrane potential change: the difference in concentration of ions inside and outside the cell membrane and the permeability (accessibility) of the membrane to these ions. When diffusion of ions occurs through the membrane, the generation and conduction of membrane potentials occurs. To generate a membrane potential three things must happen: diffusion of ions, development of equilibrium, and establishing a resting membrane potential and triggering an action
Aerobic metabolism occurs in the cell’s mitochondria and requires oxygen, anaerobic metabolism occurs in the cytoplasm and it does not require oxygen. During aerobic metabolism the hydrogen and carbon molecules from dietary fats, proteins, and carbohydrates are mixed with oxygen to form carbon dioxide and water as energy is released. These end products that are produced during aerobic metabolism are to some extent harmless and simply eliminated from the body. The citric acid cycle, sometimes called the Krebs cycle, provides the final common pathway for the aerobic metabolism of nutrients. The electron transport system is where oxidation of electrons from the hydrogen atoms generated during glycolysis and the Krebs cycle take place. The electrons are used to reduce oxygen, which combines with …show more content…
Describe the steps to generate "membrane potential".
Membrane potentials are potentials that occur at the cell membrane. The electrical potentials occur in the membranes of most cell in our body. These potentials consist of the flow and movement of ions in water. The movement of the ions cause the membrane potential to change because it is required for the generation and conduction of nerve impulses and muscle contraction, such as when we want to walk. Changes in membrane potential are also required for different types of cells, such as glandular cells, to aid in hormone secretion.
There are two main factors that make the membrane potential change: the difference in concentration of ions inside and outside the cell membrane and the permeability (accessibility) of the membrane to these ions. When diffusion of ions occurs through the membrane, the generation and conduction of membrane potentials occurs. To generate a membrane potential three things must happen: diffusion of ions, development of equilibrium, and establishing a resting membrane potential and triggering an action