Distinguish between simple diffusion (SD), facilitated di
Q: Differentiate between active transport and passive (simple) diffusion. (At least 4 differences)
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Q: Describe facilitated diffusion.
A: Introduction In this question we will discuss about the facilitated diffusion.
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Q: Compare and contrast the processes of diffusion and osmosis
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Q: Describe the two factors necessary for diffusion to occur.
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Q: Define the difference between passive transport and active transport, and give examples of each.…
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Q: Predict the movement of molecules in diffusion andosmosis.
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Q: Define osmosis, simple diffusion, facilitated diffusion and why each of these is a form of passive…
A: Different types of the movement of molecules include active transport, endocytosis, exocytosis,…
Q: Explain the difference between primary active transport andsecondary active transport.
A: Active transport is the movement of molecules against a concentration gradient across a cell…
Q: Differentiate between simple diffusion and facilitated diffusion.
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Q: Contrast facilitated diffusion and active transportin relation to energy expenditure and direction…
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Q: Explain the differences among diffusion, facilitated diffusion, active transport, and endocytosis.
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Q: As molecular weight increases.a). the rate of diffusion remain unchanged.b). the rate of diffusion…
A: Diffusion refers to the solute movement from the area of higher concentration to the lower…
Q: active transport, facilitated diffusion, and passive transport.
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Q: Explain how simple diffusion can be distinguished from facilitated diffusion and how active…
A: The simple and facilitated diffusion, active and passive transport are all different types of…
Q: Which of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It…
A: Molecules can move via biological membranes via 2 main methods : active and passive transport.…
Q: Which of the following is inversely related to the rate of diffusion for certain substance: a-…
A: Diffusion can be defined as a process in which there is movement of moleules takes place from the…
Q: Using appropriate examples, distinguish between passivetransport and facilitated diffusion.
A: ANSWER: Diffusion is the movement of particles from the region of higher concentration to the region…
Q: Diffusion requires a membrane to occur. A True B False
A: The cell membranes are semi-permeable membranes that allow only some substances to pass through…
Q: Thoroughly explain the difference between simple diffusion, facilitated diffusion, and active…
A: Simple diffusion is a type of passive transport which as the name suggests, is simply the unassisted…
Q: Differentiate between primary and secondary active transport processes.
A: The movement of molecules across the semipermeable plasma membrane and against the concentration…
Q: Explain and Illustrate how diffusion works via the cell membrane
A: Membrane transport is a phenomenon which involves transport of molecules across the plasma membrane…
Q: Using the figure to the right, explain the similarities and differences between the two types of…
A: 4. The figure in the question shows 2 types of passive transport- a) simple diffusion & b)…
Q: Describe primary and secondary active transport across a membrane, including details of the major…
A: Cells, the most fundamental and vital unit of life, are found in all living things. A cell is in…
Q: Differentiate between diffusion and osmosis.
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Q: Compare and contrast passive transport Active Transport both Passive Transpc
A: Because the plasma membrane is selectively permeable to tiny molecules, the cell's internal…
Q: Which of the following transport mechanisms requires energy? A) facilitated diffusion B) osmosis C)…
A: The cell membrane is a selectively permeable membrane such that it allows only certain molecules to…
Q: Movement of phospholipids from side to side is calleda) Facilitated diffusionb) Lateral diffusionc)…
A: The fluid mosaic membrane model is that the components of the bilayer are free to move. In…
Q: Describe the difference between passive and active forms of transport across a cell membrane.
A: Transportation is the movement of the molecules into or out of the cells by diffusion across cell…
Q: Describe the term diffusion.
A: A type of cellular transport known as passive transport involves the movement of molecules and ions…
Q: Draw the diagram of facilitated diffusion?
A: Diffusion is a process of movement of molecules from a region of their higher to a region of their…
Q: Distinguish active transport from passive transport; phagocytosis and pinocytosis.
A: Movement of molecules across a membrane is classified into two categories: active and passive…
Q: List an example of diffusion in living things
A: Diffusion is a type of passive downhill transport based on a concentration gradient. Diffusion is a…
Q: Discuss the difference in the solute concentration gradient and rate of diffusion between simple…
A: Diffusion is the movement of molecules in the presence of a concentration gradient. It is a vital…
Q: Compare and contrast passive diffusion, facilitated diffusion, active transport, and group…
A: Passive DiffusionPassive diffusion is passage across the cell membrane of simple molecules and…
Q: Explain the differences between facilitated diffusion and grouptranslocation.
A: Introduction The cell is the basic unit of life, it performs all the physiological and metabolic…
Q: Identify the factor whcih usually effect or influence diffusion rates.
A: The movement of chemicals from a region with a higher concentration to one with a lower…
Q: Differentiate the following in terms of description and properties. a. Diffusion b. Active…
A: Transportation across the membrane is a crucial process in cell biology. Some transport processes…
Q: Which of the following does NOT affect the rate of diffusion?
A: Ans. Diffusion is the passive transfer of substances from a higher-concentration to a…
Q: Define passive transport.
A: The cell membrane is also known as the plasma membrane. It is a biological membrane that separates…
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- Cells transporting substances across their membranes is essential. Choose TWO of the following types of cellular transport. ๏osmosis ๏active transport ๏facilitated diffusion ๏endocytosis / exocytosis (a)For each type of transport you choose, describe the transport process. Explain how the organization of cell membrane plays a role the movement of specific molecules across membrane. (b)Using the same transport types, identify a specific cell that utilizes that type of transit (i.e. one cell for each transport type, or two different cell examples), and detail a substance that is transferred. (c)A typical human lymphocyte has a radius of about 10 μm, while a typical bacterium (e.g., S. pneumoniae) has a radius of about 1 μm. Assuming that both cell types are perfectly spherical, compare and contrastthe transport mechanisms for each of these cells.Ouabain is a specific inhibitor of the active transport of sodium ions out of the cell and is therefore a valuable tool in studies of membrane transport mechanisms. Which of the following processes in your own body would you expect to be sensitive to inhibition by ouabain? Explain your answer in each case. a) Facilitated diffusion of glucose into a muscle cell b) Active transport of dietary phenylalanine across the intestinal mucosa c) Uptake of potassium ions by red blood cells d) Active uptake of lactose by the bacteria in your intestineName the three classes of membrane transport proteins. Explain which one or ones of these classes is able to move glucose and which can move bicarbonate (HCO3−) against an electrochemical gradient. In the case of bicarbonate, but not glucose, the ΔG of the transport process has two terms. What are these two terms, and why does the second not apply to glucose? Why are cotransporters often referred to as examples of secondary active transport?
- Name the three classes of membrane transport proteins. Explain which one or ones of these classes is able to move glucose and which can move bicarbonate (HCO3 −) against an electrochemical gradient. In the case of bicarbonate, but not glucose, the ΔG of the transport process has two terms.What are these two terms, and why does the second not apply to glucose? Why are cotransporters often referred to as examples of secondary active transport?Define the terms (i) facilitated diffusion, (ii) primary active transport and (iii) secondary active transport. Identify which of these transport types the following are examples of: a) ATP/ADP translocase b) K^+ channels c) BacteriorhodopsinFor the following scenarios, determine whether the molecules in the scenario are moving by simple diffusion (S), osmosis (0), facilitated diffusion (F), or active transport (A). a)For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels known as aquaporins b)While water molecules are polar, they are also very small. Some water molecules are able to squeeze directly through the phospholipid bilayer due to their small size. C)Charged ions such as Na* travel through a cell membrane against their concentration gradient d)Cells lining the gut need to take in glucose, but at certain times, the concentration of extraceliular glucose is lower than the concentration already stored in the cells. e)At a certain time, glucose is in a high concentration outside of a cell and needs to travel through the membrane into the cell but does so using a glucose transporter protein.
- Glucose transport across cell membranes varies depending upon blood glucose levels. When glucose levels are high, glucose transport is accomplished via membrane transporters. When glucose concentrations are low, the transport of glucose across the membrane is dependent upon the sodium ion concentration. What types of transport is observed for glucose? A)simple diffusion at high [glucose], secondary active transport at low [glucose] B)facilitated diffusion at high [glucose], secondary active transport at low [glucose] C)simple diffusion at high [glucose], primary active transport at low [glucose] D)facilitated diffusion at high [glucose], primary active transport at low [glucose]Inhibition of the Na,K-ATPase might reasonably result in which of the following: a.) gradual cellular accumulation of K+ b.) gradual decrease in cytoplasmic Na+ c.) cell shrinkage d.) hyperpolarization of the membrane potential e.) reduced activity of many secondary active transportersWhy is bulk transport important to cells? Among the three types bulk transport of molecules which do you think is most efficient and selective? (T/I)
- For each type of membrane transport, know the following:– Is a transporter protein required? If so, what type?– Is there an energy requirement, and if so, what is the energy source?– What is the relative rate of solute transport based on molecule type? On concentration gradient?– What are examples of the types of solutes transported by carriers and channels?Uniporters and ion channels support facilitated transport across cellular membranes. Although both are examples of facilitated transport, the rates of ion movement via an ion channel are roughly 104 - to 105 -fold faster than the rates of molecule movement via a uniporter. What key mechanisticdifference results in this large difference in transport rate?What contribution to free energy (ΔG) determines the direction of transport?Uniporters and ion channels support facilitated transport across cellular membranes. Although both are examples of facilitated transport, the rates of ion movement via an ion channel are roughly 104- to 105-fold faster than the rates of molecule movement via a uniporter. What key mechanistic difference results in this large difference in transport rate? What contribution to free energy (ΔG) determines the direction of transport?