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Questions and Answers

What is the resting potential of a neuron?

  • 0 millivolts
  • +40 millivolts
  • -55 millivolts
  • -70 millivolts (correct)
  • Which of the following describes the action potential?

  • A continuous shift in voltage with no thresholds
  • A Sudden reversal of the membrane's voltage (correct)
  • A variable response based on incoming stimulation
  • Depends solely on the strength of stimulation
  • What role do ion channels play during the action potential?

  • They allow specific ions to enter or leave the neuron. (correct)
  • They independently generate action potentials.
  • They maintain the resting potential indefinitely.
  • They act as a constant source of voltage for the neuron.
  • What happens during the refractory period following an action potential?

    <p>The neuron cannot fire another action potential. (A)</p> Signup and view all the answers

    How do neurotransmitters function in synaptic transmission?

    <p>They bind to specific receptor sites in the postsynaptic neuron. (A)</p> Signup and view all the answers

    What characteristic is thought to have helped our ancestors survive and reproduce?

    <p>Cognitive skills related to basic numerical concepts (B)</p> Signup and view all the answers

    Which of the following is a universal aspect of human behavior according to the content?

    <p>Innate ability to acquire language (D)</p> Signup and view all the answers

    How do male and female mating strategies differ according to evolutionary psychology?

    <p>Males compete for access to females, while females select dominant males (B)</p> Signup and view all the answers

    What is a significant factor in the perception of attractiveness as identified in the research?

    <p>Facial symmetry (C)</p> Signup and view all the answers

    What similarity exists in mate preferences across different cultures?

    <p>Desire for mutual attraction and emotional stability (C)</p> Signup and view all the answers

    Flashcards

    Sexual selection in males

    Males compete with each other for access to females, often displaying brighter colours to attract them.

    Innate human characteristics

    Characteristics present at birth or developing quickly in childhood, like reflexes, curiosity, and basic cognitive skills.

    Evolutionary basis of mate choice

    Males compete for access to females, while females select mates based on resources, status, and dominance, due to the limited number of pregnancies.

    Mate preferences across cultures

    Similarities exist across cultures in desired mate characteristics, including mutual attraction, dependability, kindness and intelligence.

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    Facial symmetry and attraction

    Humans are drawn to symmetrical faces, potentially because symmetrical features signal good health and genetic quality.

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    Neurogenesis

    The process of creating new neurons from stem cells.

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    Stem cells

    Immature cells that have the potential to develop into different specialized cell types, including neurons.

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    What is the action potential threshold?

    The intensity of stimulation required for a neuron to fire an action potential.

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    What is the all-or-none law?

    An action potential either occurs with maximum intensity or it doesn't happen at all.

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    Synaptic Transmission

    Communication between neurons, where neurotransmitters are released from a presynaptic neuron and received by a postsynaptic neuron.

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