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What is the name of the process of how things get in and out of the cell?
The process by which substances enter and exit the cell is called cellular transport. It primarily occurs through two main mechanisms: passive transport, which does not require energy, and active transport, which requires energy expenditure by the cell. Examples of passive transport include diffusion and osmosis, while examples of active transport include endocytosis and exocytosis.
What is a general type of transport that does not require an expenditure of energy by the cell?
Passive transport is a general type of transport that does not require an expenditure of energy by the cell. This type of transport relies on the natural movement of molecules from an area of higher concentration to an area of lower concentration, such as diffusion or osmosis.
What cellular function is missing in dead cells Osmosis Diffusion Active transport (solute pumping) or dialysis?
The cellular function that is missing in dead cells is active transport (solute pumping). Active transport requires energy to move molecules against their concentration gradient, a process that cannot occur if the cell is no longer metabolically active. Osmosis, diffusion, and dialysis can still occur in dead cells as they do not require energy expenditure by the cell.
What is the cellular movement of a substance that does NOT require energy?
Passive transport
Facilitated diffusion requires the use of cellular energy ATP expenditure?
No, facilitated diffusion does not require the use of cellular energy (ATP). It relies on membrane transport proteins to help move molecules across the cell membrane with the concentration gradient, without needing energy input from the cell.
Does active transport require a membrane?
Yes, active transport requires a membrane because it involves the movement of molecules or ions against their concentration gradient, which requires energy expenditure. This process is facilitated by specific transport proteins embedded within the membrane.
What transport methods require energy expenditure by the cell?
Active transport mechanisms, such as sodium-potassium pumps, proton pumps, and endocytosis/exocytosis, require energy expenditure by the cell in the form of ATP. These processes involve the movement of substances against their concentration gradient, from an area of lower concentration to an area of higher concentration, which requires energy input.
How is faciliated transport similar to simple diffusion?
Facilitated and simple diffusion both transport solutes along a concentration gradient and neither processes require any ATP expenditure.
What parts of cellular respiration don't require oxygen?
Glycolysis is the only part of cellular respiration that does not require oxygen. It is the process by which glucose is broken down to produce pyruvate and a small amount of ATP. The subsequent steps of cellular respiration, including the Krebs cycle and electron transport chain, require oxygen to fully extract energy from glucose.
Why is diffusion any example of passive transport?
Diffusion is considered a passive transport process because it does not require the input of energy to move molecules from an area of high concentration to an area of low concentration. This movement occurs spontaneously due to the natural kinetic energy of the molecules, and it continues until equilibrium is reached.
What type of transport happens when oxygen is absorbed into cells?
When oxygen is absorbed into cells, it typically occurs through the process of diffusion. Oxygen molecules move from an area of high concentration (such as the lungs or bloodstream) to an area of low concentration (inside the cells) through the cell membrane. This passive transport process is driven by the concentration gradient and does not require energy expenditure by the cell. Once inside the cell, oxygen is used in cellular respiration to generate ATP, the energy currency of the cell.
Does the process of endocytosis require energy to transport molecules into a cell?
Yes, the process of endocytosis requires energy to transport molecules into a cell.
