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#Question id: 10979


Which of the following conditions at the A-V node will cause a decrease in heart rate?

#Unit 7. System Physiology – Animal
  1. Increased sodium permeability
  2. Increased norepinephrine levels
  3. Increased potassium permeability
  4. Increased calcium permeability

Answer:- Option(s): 3


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Where is rhodopsin located in the cell?

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#Unit 10. Ecological Principles

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#Question id: 711

#Unit 1. Molecules and their Interaction Relevant to Biology

The shortest alpha helix segment in a protein that will span a membrane bilayer has about.

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