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- Distinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisA transport protein requires ATP to pump sodium ions across a membrane. This is a case of ______. a. passive transport b. active transport c. facilitated diffusion d. a and cThe protein galactoside permease transports sugars like lactose against a concentration gradient by coupling transport with H* which moves with a concentration gradient. This is an example of Simple diffusion Facilitated diffusion Primary active transport Secondary active transport
- Which of the following is true regarding bulk transport? ATP is required to pump molecules against the concentration gradient Bulk transport is an example of passive transport Transport of large quantities of materials ATP changes the shape of a protein channel during active transportCompare and contrast the following methods of a passing cell membrane in terms of movement with respect to the concentration gradient, use of ATP, and the use of transporters with examples. Active Transport vs Passive TransportWhat is another way to answer this question Describe various examples of active transport. How is active transport different from passive transport? Without saying this: Active transport is when cells move against the flow/ concentration gradient, moving from low concentrations to high concentrations. Because of this, active transport requires ATP to work. Passive transport is different because it doesn't use much energy and moves from high concentration to a low concentration. Some examples of active transport are the Sodium-potassium pump ( the most well known one) where it takes sodium ions and pumps them outside of the membrane to let in potassium ions. Another one in plants is when a plant receives ions from the soil. The soil has a much lower concentration of ions than a plants root does, so ions have to move against the concentration gradient. Endocytosis and exocytosis are also forms of active transport. Where cells engulf its self around large molecules to bring…
- What are three types of energy that can power an active transport pump? Provide an example of each type (eg Na/K pump)The following are true statements regarding passive facilitated transport EXCEPT The process is always thermodynamically favorable. It uses the same driving force as that of active transport. The movement of solute acrosss the membrane is dictated by existing concentration or ion gradient. It requires a carrier protein which is an integral membrane protein.An animal cell has an internal concentration of 0.1M of NaCl. You place this cell into a solution with 5M NaCl. Select the true statement below. The solution is hypotonic to the cell therefore the cell will lyse The solution is hypotonic to the cell therefore the cell will shrivel The solution is hypertonic to the cell therefore water will lyse The solution is hypertonic to the cell therefore water will shrivel
- Compare and contrast passive transport and active transport Active Transport both Passive TransportWhich of the following characteristics may be used to describe Active Transport? Select all that apply. occurs without a transporter protein requires an energy source shows saturation kinetics (has a maximum rate) can occur against a concentration gradient (i.e. uphill)If an animal cell was placed in a hypertonic solution, which answers predict what would NOT happen? Osmosis will cause the cell to lose water The cell will expand and possibly die due to the gain of salt by diffusion. The cell will shrivel and possibly die due The cell will not change The cell will shrivel and possibly die due to loss of salt by diffusion. The cell will develop cancer The cell will expand and possibly die due to the gain of water by osmosis.