Clicker Questions For Test 3

13 Questions | Total Attempts: 32

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Animal Development


Questions and Answers
  • 1. 
    If Ca++ is not present in a myofibril, a muscle cannot contract because
    • A. 

      ATP cannot bind to myosin

    • B. 

      Myosin cannot bind from tropomyosin

    • C. 

      Myosin cannot bind to actin

    • D. 

      ADP cannot be converted to ATP

  • 2. 
    Which of the following is the correct statement about cells of the human retina?
    • A. 

      Cone cells can detect color, but rod cells cannot

    • B. 

      Cone cells are more sensitive to light than rod cells

    • C. 

      Cone cells, but not rod cells, have a visual pigment

    • D. 

      Rod cells are most highly concentrated in the center of the retina

  • 3. 
    When an odorant molecule binds to an olfactory receptor,
    • A. 

      The odorant molecule is transported into the sensory cell

    • B. 

      The odorant molecule serves as a neurotransmitter

    • C. 

      The odorant molecule results in a change in the membrane potential of the sensory cell

    • D. 

      The odorant molecule destroys the neurotransmitters

  • 4. 
    The pathway leading to the perception of sound by mammals begins with the
    • A. 

      Hair cells of the organ of Corti, which rests on the basilar membrane

    • B. 

      Hair cells of the organ of Corti, which rests on the hympanic membrane

    • C. 

      Hair cells of the organ of Corti, which rests on the tectorial membrane

    • D. 

      Hair cells of the organ of Corti coming in contact with the tectorial membrane

  • 5. 
    Why does your arm feel cold when you reach inside the refrigerator to get a container of milk?
    • A. 

      Circulating levels of prostoglandins increase

    • B. 

      The temperature of the blood circulating to the arm decreases

    • C. 

      Thermoreceptors in the skin undergo accomodation, which increases their sensitivity

    • D. 

      Theremoreceptors send signals to the posterior hypothalamus

  • 6. 
    sensory receptors
    • A. 

      Produce different types of action potentials based on the stimulus

    • B. 

      Respond to a single type of stimulus (heat, pressure, light, etc)

    • C. 

      Increase the frequency of the action potentials when stimulated

  • 7. 
    Which of the following structures or regions is incorrectly paired with its function?
    • A. 

      Limbic system-motor control of speech

    • B. 

      Medulla oblongata-homeostatic control

    • C. 

      Cerebellum-coordination of movement and balance

    • D. 

      Corpus callosum-communication between the left and right cerebral cortices

  • 8. 
    The establishment and expression of emotions involves the
    • A. 

      Frontal lobes and limbic system

    • B. 

      Frontal lobes and parietal loes

    • C. 

      Parietal lobes and limbic system

    • D. 

      Frontal and occipital lobes

  • 9. 
    What part of the brain controls the heart rate?
    • A. 

      Neocortex

    • B. 

      Medulla

    • C. 

      Thalamus

    • D. 

      Pituitary

  • 10. 
    Which of the following activities would be associated with the parasympathetic division of the nervous system?
    • A. 

      Rest and digestion

    • B. 

      Release of both acetylcholine and epinephrine

    • C. 

      Increased metabolic rate

    • D. 

      Fight-or-flight response

  • 11. 
    Which of the following is associated with the evolution of a central nervous system?
    • A. 

      Bilateral symmetry

    • B. 

      Radial symmetry

    • C. 

      Nerve nets

    • D. 

      Excitable membranes

  • 12. 
    Neurotransmitters are released from axon terminals via
    • A. 

      Osmosis

    • B. 

      Active transport

    • C. 

      Diffusion

    • D. 

      Transcytosis

    • E. 

      Exocytosis

  • 13. 
    The surface on a neuron the discharges synaptic vesicles is the
    • A. 

      Dendrite

    • B. 

      Axon hilock

    • C. 

      Node of Ranvier

    • D. 

      Postsynaptic membrane

    • E. 

      Presynaptic membrane

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