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- Urgent help needed Watch the following movie clip from Lord of the Rings: The Fellowship of the Ring. In this clip, Gandalf the Wizard stops the fire demon from passing across the stone bridge. Explain how this clip is similar to the role of the plasma membrane. Use as much detail (about the membrane, not the movie) to support your answer.Given the solute content of two solutions separated by a selectively permeable membrane predict which way water will flow across the membrane by osmosis? Thank youPart I – Introduction to Diffusion and Osmosis1. Define the terms diffusion, passive transport, active transport, and osmosis. In each of your definitions, describe the role of a concentration gradient. 2. Biological membranes are said to be selectively permeable (or semi-permeable). What does this term mean, and how does this affect the way that molecules are able to move through cellular membranes? 3. Which type of molecule is more likely to quickly pass through a cellular membrane via simple diffusion, polar or nonpolar? Why? (You may need to use information from your textbook and class discussions to answer this question.)
- Why the composition of biological membrane varies ? Should it be helpful in membrane physiology ?Address how materials like amino acids, carbohydrates, ions and water can pass through the biological membrane. Be sure to talk about the similarities and differences between diffusion, facilitated diffusion, osmosis and active transport.Durning neuronal maturity: A) exocytosis = endocytosis B) endocytosis < exocytosis C) exocytosis < endocytosis D) exocytosis is stopped by clatherin
- Provide a detailed, written explanation of the plasma membrane structure explaining both composition and arrangement. Refer to your drawings as necessary.How exactly does a cell's plasma membrane work? I have a vague understanding of it, but I would like a better explanation. Thanks.Solutes tend to diffuse from a region where they are _______ concentrated to an adjacent region where they are _______ concentrated. a. more, less b. less, more c. movement is independent of concentration
- Describe the permeability of cell membranes. How to substances cross cell membranes? Utilize the terms bi-polar, semi-permeable, diffusion, active transport, membrane proteins, endocytosis, exocytosis, vesicles, phagocytosis, pinocytosis, etc. (This should be 3-4 paragraphs long)Which of the following factors would tend to increase membrane fluidity? A greater proportion of unsaturated phospholipids A relatively high protein content in the membrane A greater proportion of saturated phospholipids A lower temperatureExplain the structure of a biological membrane. Be sure to address how the phospholipids, proteins, glycolipids and glycoproteins are organized to create the biological membrane.