osmosis is how excess salts that accumulate in cells are transferred to the blood stream so that they can be removed from the body. Explain how this process works in terms of tonicity.
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osmosis is how excess salts that accumulate in cells are transferred to the blood stream so that they can be removed from the body. Explain how this process works in terms of tonicity.
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- Osmotically active substances are called _____________.When doing the glucose in drinks experiment I measured an absorbance reading of 0.002 for orange juice and 0.045 for iced tea which is essentially nothing, why would this be the caseTetrodotoxin is a neurotoxin found in puffer fish. This large molecule blocks the sodium channels in neurons. Infer the effect tetrodotoxin would have on the passing of an action potential in a neuron.
- Explain what is meant by the statement "Metabotropic receptors act via second messengers."Information about poisonIs there are direct relationship between the values of percent transmittance and absorbance? Provide reasons why or why not. What range of absorbance values has an almost equivalent degree of change in percent transmittance?
- Which is the correct example of tonicityif you inject current into the middle of an axon by using an intracellular electrode you will get two action potentials traveling in opposite directions. Explain the biophysical basis for this effect including why you won't observe backpropogation.Using the principles of osmosis, explain why movement of Na + through a plasma membrane is followed by movement of water. Use this concept to explain the rationale on which oral rehydration therapy is based.