PYC1501 ASSIGNMENT QUESTION AND ANSWERS

PYC1501 ASSIGNMENT QUESTION AND ANSWERS 2018- 2021. Question 1 – 6 refer to the following scenario: A tutor for the first-year psychology group is dealing with the topic of impulse conduction in the human nervous system. The tutor gives the students the following questions to test their knowledge of the study material they were asked to prepare for the class. Question 1 The part(s) of the neuron that (is) are responsible for receiving information signals, (is) are called . . . 1. dendrites 2. boutons 3. myelin 4. all of the above Question 2 The part of the neuron that facilitates synaptic transmission of a signal to another neuron is . . . 1. dendrite 2. terminal bouton 3. soma 4. myelin sheath Question 3 The electrical charge resulting from the difference between the positive and negative ions outside and inside the cell membrane is called . . . 1. the action potential 2. a high threshold 3. the resting membrane potential 4. the refractory period Question 4 Which of the statements about the following diagram is/are correct? 1. In accordance with the all-ornone-law, neurons A, B, C and D will conduct an impulse at exactly the same speed, or not at all. 2. In comparison with neurons A, C and D, neuron B can conduct impulses at the highest speed and amplitude. 3. In comparison with neurons A, B and C, neuron D will conduct impulses at the highest frequency. 4. 1 & 3 Page 1 PYC1501 ASSIGNMENT QUESTION AND ANSWERS Question 5 The opening across which one neuron communicates with another neuron is known as the . . . 1. threshold 2. channel 3. synaptic cleft 4. membrane Question 6 The tutor asks the group what the term “refractory period” means. One of the students said that it is a phase when the neuron is not ready to fire. Evaluate this answer. The statement is . . . 1. not correct because the refractory period refers to the phase between the action potential and the resting potential 2. not correct because the refractory period refers to the phase when the neuron is ready to fire 3. partially correct, because the neuron is unable to fire during the absolute refractory period 4. correct, because the neuron is not ready to fire during the refractory period. Question 7 The tutor asks the group to draw up a flow chart to illustrate the process of synaptic transmission. Is this an appropriate way to illustrate synaptic transmission? 1. no, because a diagram should be used to represent the process 2. yes, because a flow chart should provide a great deal of detailed information 3. yes, because a flow chart should provide an overview of the process it illustrates 4. yes, because the flow of information goes in one direction only Question 8 Which of the following illustrates the correct sequence of events in the process of synaptic transmission? 1. nerve impulse stimulates bouton, neurotransmitter diffuses across synaptic cleft, vesicles attach to presynaptic membrane 2. nerve impulse stimulates bouton, transmitter deactivated by bouton, electrical changes in receiving cell 3. nerve impulse stimulates bouton, vesicles attach to membrane, neurotransmitters released and attach to receptors on postsynaptic membrane Page 2 PYC1501 ASSIGNMENT QUESTION AND ANSWERS 4. nerve impulse stimulates bouton, neurotransmitters attach to receptors, neurotransmitters cross synaptic cleft Question 9 During synaptic transmission, several excitatory inputs are required to overcome resistance and produce an impulse in the postsynaptic neuron. The tutor asks the students to select the correct term used to describe the occurrence when such an impulse is produced by simultaneous inputs from different neurons. 1. spatial summation 2. inhibition 3. temporal summation 4. excitation Question 10 The tutor asks students what determines whether a neurotransmitter will have an inhibitory or excitatory effect. One student answers that it depends on the nature of the neurotransmitter. This statement . . . 1. does not provide the correct answer because it is too vague 2. is correct because the effect depends on the quantity of the neurotransmitter in relation to the enzyme that destroys it 3. is partially correct, because other factors also play a role 4. is not correct because the effect depends on the ratio of inhibitory to excitatory neurotransmitters in a specific synapse. The tutor asks the students to draw up questions (11 - 14) for a quiz on the topic of synaptic transmission, to help them prepare for the exam. Question 11 This neurotransmitter is released by sympathetic nerves and acts on the heart, blood vessels, large skeletal muscles and accelerates metabolism. 1. acetylcholine 2. serotonin 3. adrenalin 4. endorphin Question 12 Drugs work through their effects on synaptic processes. The effects are brought about because drugs . . .neurotransmitters. 1. inhibit 2. facilitate Page 3 PYC1501 ASSIGNMENT QUESTION AND ANSWERS 3. mimic 4. all of the above Question 13 Low serotonin levels are associated with . . . just as dopamine deficiency is associated with Parkinson’s disease. 1. muscular spasms 2. suppression of pain 3. seasonal depression 4. mania The tutor realizes that many students have difficulty grasping the required knowledge on the structures of the nervous system and the functions of these structures. She draws up a table with a list of the main structures in the left hand column. She then asks the students to describe the functions associated with these structures. Questions 14 to 23 refer to this list of structures. Structure function A. Spinal cord B. Spinal nerves - afferent C. Spinal nerves – efferent D. Somatic nervous system E. Frontal F. Temporal G. Parietal H. Occipital I. Thalamus J. Hypothalamus K. Medulla oblongata L. Cerebellum M. Pons N. Reticular formation O. Tectum P. Tegmentum Q. Basal ganglia R. Hippocampus S. Limbic system Question 14 The main function of this structure is to distribute motor fibres to the muscles and to convey somatosensory information to the brain. It can work independently of the brain as a result of reflexive control circuits. This is a description of the . . . 1. I Page 4 PYC1501 ASSIGNMENT QUESTION AND ANSWERS 2. A 3. D 4. B Question 15 The part of the brain concerned with visual perception is the . . . lobe. 1. E 2. F 3. G 4. H Question 16 The part of the brain responsible for the integration of sensory-motor information is the . . . lobe. 1. E 2. F 3. G 4. H Question 17 People with damage to part of in this lobe, can hear the words spoken to them but the spoken words have no meaning for them. 1. E 2. F 3. G 4. H Question 18 People with damage to part of this lobe can understand words but have problems with the expression (motor control) of meaningful speech. 1. E 2. F 3. G 4. H Question 19 The part of the hindbrain that maintains an optimal arousal level for brain functioning, is called the . . . 1. K 2. L Page 5 PYC1501 ASSIGNMENT QUESTION AND ANSWERS 3. M 4. N Question 20 Which of the following structures of the brain is/are involved in movement? 1. P 2. Q 3. L 4. P, Q and L Question 21 The hypothalamus is concerned with . . . 1. regulation of basic survival needs 2. memory 3. planning 4. relaying sensory information Question 22 The . . . is the relay station for sensory information on its way to the cortex. 1. J 2. I 3. R 4. N Question 23 ‘Reward’ and ‘punishment’ areas are found in the . . . which is also related to emotion. 1. J 2. I 3. Q 4. S Question 24 Some students indicate that they are still a little confused and ask the tutor if she can provide a different kind of representation of the nervous system that would make matters clearer. You think that the information can best be represented in . . . A. a flow chart, showing how the different structures are related B. a flow chart, illustrating the process of how the brain works C. an expandable tree structure, indicating the hierarchical nature of the nervous system D. an expandable tree structure, because different branches can be expanded when more detail is required Page 6 PYC1501 ASSIGNMENT QUESTION AND ANSWERS E. a flow chart, because detailed information can be presented at the outset F. an expandable tree structure, because complex information cannot be represented in a flow chart 1. A, B and C 2. C, D and F 3. A and E 4. C and D Question 25 The group is discussing the peripheral nervous system and the tutor asks the students to complete the following statement by choosing the correct options from the list below: “The . . . activates the body while the . . . restores normal functioning”. 1. autonomic nervous system; peripheral nervous system 2. autonomic nervous system; homeostasis 3. sympathetic nervous system; parasympathetic nervous system 4. sympathetic nervous system; somatic nervous system Page 7 PYC1501 ASSIGNMENT QUESTION AND ANSWERS Page 8 PYC1501 ASSIGNMENT QUESTION AND ANSWERS PYC1501 – 2011 - ASSIGNMENT 2 (answers taken from TL) Imagine that you are a student psychologist working in a mental health clinic in Johannesburg. The team at the clinic comprises nursing and cleaning staff, psychiatrists (qualified and in training), psychologists and student psychologists. Your tasks include working with patients, outreach activities in the community and participating in study groups for discussing topics of interest. The questions in Assignment 03 refer to this scenario. Question 1 A youth group leader is concerned about the increasing problem of drug abuse in the community. He wants to organise a workshop for his youth group to provide information about drugs in the hope that this will reduce the incidence of drug abuse. He asks you to give a presentation on the effects of drugs on behaviour. 1. the aim of the presentation is to prevent drug abuse 2. the target audience is young people in the community 3. the area of interest is the effect of drugs on behaviour 4. all of the above Question 2 A suitable title for your presentation would be . . . 1. the prevention of drug abuse 2. states of consciousness: drug effects 3. the drug problem faced by the youth today 4. the behavioural effects of drugs Question 3 You explain that the main effect of depressants is to decrease arousal levels. One young person in the group asks for an example of a depressant. What should your answer be? 1. alcohol 2. cocaine 3. marijuana 4. all of the above Question 4 At the next study group, you are asked to provide information about other altered states of consciousness, such as sleep and hypnosis. One of the nurses asks you whether sleep apnea is a characteristic of narcolepsy. You reply . . . 1. no, because narcolepsy is characterised by an overwhelming need to sleep 2. no, because insomnia is the main characteristic of narcolepsy Page 9 PYC1501 ASSIGNMENT QUESTION AND ANSWERS 3. no, because narcolepsy is characterised by an inability to move 4. no, because sleep apnea is a characteristic of insomnia Question 5 When discussing sleep, you are asked the following question: When you wake up and clearly remember what you were dreaming about, what stage of sleep have you woken from? Your answer should be . . . 1. phase 2 sleep 2. phase 3 sleep 3. phase 4 sleep 4. D-sleep At the next study group, another student psychologist presents information on sensation and perception. The senior psychologist prepares a quiz to test your knowledge on the topic (questions 6 – 10). Question 6 A strong smell may seem less intense as time passes by. This is because receptor cells get tired of firing in response to continuous presentation of a stimulus. This process is called . . . 1. sensory adaptation 2. habituation 3. transduction 4. sensation Question 7 Which of the following statement(s) refer(s) to the orienting reaction? 1. the orienting reaction occurs when a stimulus is recognised or given meaning 2. the orienting reaction follows a change in environmental stimulation 3. habituation refers to the re-appearance of the orienting reaction 4. all of the above Question 8 When you are talking to someone special at a party, you are able to focus on the voice of that person and screen out the background noise. This is an example of which law of perceptual organisation? 1. closure 2. proximity 3. grouping 4. figure and ground Page 10 PYC1501 ASSIGNMENT QUESTION AND ANSWERS Question 9 The theory that explains colour vision on the basis of red, green and blue retinal systems is called the . . . 1. Hering theory 2. Retinex theory 3. Opponent-process theory 4. Trichromatic theory Question 10 Which of the following statements about attention is correct? 1. attention is an automatic process that takes place below the level of awareness 2. people cannot attend to more than one thing at a time 3. there are internal and external determinants of attention 4. parallel processing is easier when both tasks require you to pay close attention Many of the people you see at the clinic have relationship problems. You realise that many of these problems result from difficulties with reasoning, problem solving and communication. Questions 11 – 13 deal with this topic. Question 11 You use the following example to illustrate faulty reasoning: Peter is driving too fast and gets caught in a speeding trap. He does not want to pay the heavy fine and argues with the traffic cop: “I cannot afford to pay for this! If I do, my wife and children will have nothing to eat for a week. And what is more, I still have to pay my electricity account and an installment on my TV. Please sir, help me out.” What kin d of fallacious reasoning is Peter using here? 1. relying on group characteristics to gain support for his conclusion 2. false analogy 3. playing on sympathy to support his conclusion 4. trying to discredit the issue by discrediting the person who supports it Question 12 Difficulties often arise when a person assesses a problem from one point of view only and does not look at alternatives. This is an example of … 1. restricted thinking 2. an emotional barrier to problem solving 3. a perceptual barrier to problem solving.