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#Question id: 11194

The "threshold" potential of a membrane is the ________.

#7. System Physiology – Animal
  1. lowest frequency of action potentials a neuron can produce
  2. minimum hyperpolarization needed to prevent the occurrence of action potentials
  3. minimum depolarization needed to operate the voltage-gated sodium and potassium channels
  4. peak amount of depolarization seen in an action potential
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TLS Online TPP Program

#Question id: 11969

#7. System Physiology – Animal

What is the importance of the mucus that are released by salivary glands?
TLS Online TPP Program

#Question id: 11007

#7. System Physiology – Animal

A 25-year-old, well-conditioned athlete weighs 80 kg (176 lb). During maximal sympathetic stimulation, what is the plateau level of his cardiac output function curve?
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#Question id: 19360

#13. Methods in Biology

What does the M13 fragment in a phagemid contain?
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#Question id: 10238

#10. Ecological Principles

The diagram below shows the frequency distribution of two closely related bird species based on their resource use in sympatric. Which one of the following phenomena most appropriately explains the change in frequency distributions of species 1 and 2 in the figure given above?
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#Question id: 3523

#8. Inheritance Biology

If the number of heterozygous pairs involved in a particular cross is three, the phenotype ratio obtained in their F2 generation will be-