sample-mt1 (1)

sample-mt1 (1) - NPB 101 Spring 1996 NAME MIDTERM I (White...

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NPB 101 Spring 1996 NAME MIDTERM I (White Version) April INSTRUCTIONS: 1. 2. 3. 4. 5. 6. 7. 8. Use SCAN-TRON Form No. 882 ONLY. A No. 2 pencil MUST be used. Erasures MUST be complete. Completely darken the proper answer space. Do not make any extraneous marks on the answer sheet. Choose the BEST answer to each question. are 31 questions. Hand in the SCAN-TRON form and this sheet WITH YOUR NAME ON IT.
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NPB 101 1. Which of the following matches is (are) correct? Midterm I 1996 d. e. binding site for myosin myosin heads of heavy meromyosin activity Troponin subunit T calcium binding site. a and b. a, b and c. 2. Which statement about the visual system is FALSE? C. d. When light is absorbed by a photoreceptor it releases more neurotransmitter. Your eyes adapt to bright light by a reduction of the photosensitive pigments in the receptors, Retinal ganglion cells show center-surround antagonism in their receptive fields. Hierarchical processing allows cells in the visual cortex to respond to a bar of light with a particular orientation. e. Sodium ion channels in photoreceptors are regulated by 3. Which statement about the role of ion channels in the action potential of a “typical” neuron is FALSE? a. The rapid depolarization is caused by opening voltage-gated sodium channels. b. All voltage gated sodium channels open at the same threshold membrane potential. c. Voltage gated potassium channels help rapidly repolarize the membrane. d. Opening of chemically (ligand) gated channels at a synapse may initiate an action potential. e. While inactivated, a sodium channel does not allow sodium ions to pass through it. Which statement (a-d) about hearing is FALSE? a. To transduce sound, hair cells produce graded potentials. b. A high frequency sound (e.g. 10,000 Hz) will cause the same frequency of action potential in auditory nerve cells. c. Different sound frequencies will cause different portions of the basilar membrane to vibrate most. d. The primary auditory cortex is in the temporal lobe. e. None of the above is false.
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NPB 101 3 Midterm I 1996 5. Use the information in the figure to answer the question below. Several neurons are shown synapsing on the cell body of neuron A pipette with a drug is near the synapse with neuron Records of synaptic potentials created in neuron are shown in A-D. Arrows show the time of a single stimulation of the indicated neurons. Which statement below is FALSE? e. Record A shows an example of pre-synaptic inhibition. Record B is an example of temporal summation. Record D suggests that activation of Neuron 4 alone would cause in Neuron 5 The mechanism of the drug used in Record C could be to block neurotransmitter re-uptake. The mechanism of the drug used in Record C could be to mimic the transmitter from Neuron 2. 6.
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This note was uploaded on 01/30/2012 for the course BIS 101/102 taught by Professor Etzler during the Spring '10 term at UC Davis.

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sample-mt1 (1) - NPB 101 Spring 1996 NAME MIDTERM I (White...

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