Understand the composition of biological membranes and how the amphipathic nature affects permeability of membranes to hydrophobic and hydrophilic compounds. Understand effects of hypotonic, isotonic, and hypertonic solutions on cell shape and function.

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Nestor RutherfordLv2

5 Mar 2019

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Related questions

1. predict the direction of water movement based on differences in solute concentrations. Use the terms osmotic pressure, hypotonic, isotonic, and hypertonic
2. Why do membranes have to be selectively permeable?

3. What determines whether a particular substance can diffuse (simple or facilitated) through a membrane?

4. What mechanisms drive molecules across membranes? Use the terms concentration gradient, (facilitated) diffusion and active transport.
5. Which parts of the plasma membrane proteins do you expect to be hydrophobic or hydrophilic? Justify your answer.
concise and short answers pls

Define the following terms that can be used to describe what effect a solution has on living cells: hypotonic, isotonic, hypertonic. Consider normal saline (used for IV solutions); it contains 150 mM NaCl. What is the osmolarity of normal saline? Use one of the terms in a sentence to describe how normal saline affects cells in the human body.

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Please keep it answer between 3to7 sentences. or keep it short.

1. Describe how the âfluid mosaicâ structural model of the cell membrane allows it to perform its function of being âselectively permeableâ.

2. For two of the following types of transport, describe the process itself, how the structure of the cell membrane functions in the transport of molecules, and the significance of each type to a cell. â¢ Facilitated diffusion â¢ Active transport â¢ Endo/Exocytosis

3. Describe the significance of hypotonic, hypertonic, and isotonic solutions to both animal and plant cells.

4. Energy transfers occur in all cellular activities. Explain this process and the role of ATP in cotransport.

5. Discuss the induced fit model of enzyme-substrate interaction. Include how substrate concentration, temperature changes, and competitive inhibition may affect that interaction. 6. Discuss the similarities and differences between the biochemical pathways of aerobic respiration and photosynthesis.

7. Membranes are important structural components of cells. Describe the role of membranes in the synthesis of ATP in both cellular respiration and photosynthesis.