TLS Online TPP Program

#Question id: 3535


Phenotypic plasticity refers to  

#Unit 8. Inheritance Biology
  1. change in phenotype over the course of generations with change in genotype

  2. the same genotype producing different phenotypes in different environments

  3. change in phenotype due to random genetic drift

  4. the phenotype being moulded by the environment through natural selection to an optimal state.

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TLS Online TPP Program

#Question id: 11185

#Unit 7. System Physiology – Animal

Use the information in the table to answer the question. Calculate the equilibrium potential for sodium. Assume a temperature of 37°C.

 

TLS Online TPP Program

#Question id: 11186

#Unit 1. Molecules and their Interaction Relevant to Biology

Refer to the following graph of an action potential to answer the question. The membrane potential is closest to the equilibrium potential for potassium at label ________.

TLS Online TPP Program

#Question id: 11186

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question. The membrane potential is closest to the equilibrium potential for potassium at label ________.

TLS Online TPP Program

#Question id: 11187

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question.



The membrane's permeability to sodium ions is greatest at label ________.

TLS Online TPP Program

#Question id: 11188

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question.

The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label ________.

TLS Online TPP Program

#Question id: 11189

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question.

At label ________, the cell is not hyperpolarized; however, repolarization is in progress, as the sodium channels are inactivated or becoming inactivated, and many potassium channels have opened.