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G9 Advanced Biology Chapter 6 Revision Sheet G9 Advanced Multiple Choice Questions. Q1. What is occurring in the diagram above? a. b. c. d. K+ ions are entering the neuron Negatively charged proteins are leaving the neurons. Na+ ions are entering the neuron. The myelin code has broken down, allowing ions to freely cross the plasma membrane . Q2. What is the correct path that a nerve impulse will follow in a reflex arc? a. b. c. d. Motor neuron → interneuron → sensory neuron Interneuron → Motor neuron →sensory neuron Motor neuron → sensory neuron → interneuron Sensory neuron → interneuron → motor neuron Q3. Which of the following is a characteristic of the sympathetic division found in the autonomic system? a. b. c. d. stimulates digestion dilates the bronchi slows the heart rate converts glucose to glycogen 1 Q4. If the portion indicated by the arrow was damaged as a result of trauma, what effect would this person most likely experience? a. b. c. d. partial or complete memory loss body temperature fluctuations trouble maintaining balance rapid breathing Q5. Which nervous system is the hypothalamus most involved in regulating? a. b. c. d. voluntary peripheral sensory autonomic Q6. If there was a power outage in a cinema and only a few dim emergency lights were lit, which cells of the retina would be most important for seeing your way to the exit. a. b. c. d. rods cones rods and cones are equally important night vision cells 2 Q7. Which represents the correct sequence as sound waves travel in the ear to trigger an impulse? a. b. c. d. cochlea, incus, stapes, eardrum tympanum, bones in the middle ear, cochlea, hair cells auditory canal, tympanum, hair cells, cochlea hair cells, auditory canal, cochlea, malleus Q8. Which of the following senses is associated with free nerve endings? a. b. c. d. taste hearing touch sigh Q9. Some rides at amusement parks cause a person to become dizzy when the ride stops. Which structure in the diagram is most likely involved with the dizzy feeling? a. b. c. d. A B C D 3 Q10. ___________ conduct electrical impulses that allow cells, tissues, and organs to detect and respond to stimuli. a. b. c. d. axon neurons dendrite cell body Q11. What are the two major divisions of the nervous system? a. b. c. d. somatic nervous system and autonomic nervous system sympathetic nervous system and parasympathetic nervous system central nervous system and peripheral nervous system anxious system and somatic nervous system Q12. Which receptors allow you to detect the world around you? a. b. c. d. cochlea malleus visionary sensory Which of the following is the organ that transmits information to the brain about body position and balance? Q13. a. b. c. d. auditory receptors cochlea semicircular canals malleus Q14. Which neurotransmitter is found in the brain that is involved with the control of body? a. b. c. d. stimulant nicotine adenosine dopamine 4 Q15. Which of the following is a depressant? a. b. c. d. water tea alcohol orange juice 5 Constructed Response Questions. Q1 a. For each set of terms below, choose the one term that does not belong and explain why it does not belong. 1. axon, dendrite, reflex arc 2. cell body, synapse, neurotransmitter 3. myelin, node, threshold b. Hypothesize why it takes more energy for a nerve impulse to travel along an axon that lacks myelin as opposed to an axon that has myelin. c. Explain the following analogy: A neuron is like a one-way street, while a nerve is like a two-way street. 6 Q2 a. What does it mean when someone is addicted to a drug? b. Discuss what consequences might arise if a person’s gene for the production of dopamine is defective. c. Form a conclusion about the following statement: “It is more difficult for someone to get addicted to drugs than it is to stop using drugs.” Explain. 7