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  PANITIA BIOLOGI NEGERI KELANTAN 2007 BIOLOGY QUESTIONS BANK 12-1 CHAPTER 12: COORDINATION AND RESPONSE Objective Items 12.1 Coordination And Response 1. Specialised endings of nerve fibre that detect information are called….   A. Effectors B. Sensory receptor C. Stimuli D. The integrating centre 2. The afferent pathway is the transmission of nerve impulses from the  A. Effectors to the sensory receptors B. Integrating centre to the effectors C. Sensory receptors to the effectors D. Sensory receptors to the integrating centre 3. What is meant by stimulus?  A. A change in the level of the factor being regulated B. A structure to detect an environmental change C. To enable the receptor to detect changes brought about by the effectors D. To receive integrate information and to trigger action that will correct the change in stimulus  PANITIA BIOLOGI NEGERI KELANTAN 2007 BIOLOGY QUESTIONS BANK 12-2 4. The figure shows a biological control system. What could be P, Q and R? P Q R  A Receptor Stimulus Nerve impulse B Stimulus Receptor Effector C Receptor Effector Stimulus D Stimulus Effector Receptor 5. Coordination and response are carried out by the I lymphatic system II endocrine system III circulatory system IV nervous system A.  I and III only B.  I and IV only C.  II and IV only D.  III and IV only 12.2 The Role Of The Human Nervous System 6. What is the function of cerebrum?  A. Initiates and controls all voluntary actions B. Coordinates movement and maintains body balance C. Controls and coordinates all involuntary actions D. Controls all voluntary and involuntary actions P Q Integrating centre R Resonse  PANITIA BIOLOGI NEGERI KELANTAN 2007 BIOLOGY QUESTIONS BANK 12-3 7. Which of the following is an example of a voluntary action?  A. Knee jerk reflex B. Dilation of eye pupil in a dark room C. A boy kicks a ball D. Quick withdrawal of the hand when it touches a hot object 8. Which of the following parts of the brain plays a regulating role in homeostasis?  A. Cerebellum B. Medulla oblongata C. Hypothalamus D. Cerebrum 9. Which of the following are true about synapses? I A synapse is a narrow space between two neurons II A neuron may has a synaptic connection with many other neurons III Nerve impulse can only flow through synapse in one direction IV The transmission of nerve impulse across a synapse can be affected by drugs A.  I and II only B.  II and IV only C.  I, II and IV only D.  I, II, III and IV 10. Some nerves carry impulses much faster than others. What could be the reason for the difference?  A. This nerve has a very short axon B. These nerves are made of myelinated neurons C. The absence of myelin sheath speed up nerve impulses D. The neurons in these nerves have more dendrite than others  PANITIA BIOLOGI NEGERI KELANTAN 2007 BIOLOGY QUESTIONS BANK 12-4 12.3 The role of hormones in humans 11. Which of the following is a correct match between the endocrine organ that produces the hormone insulin and its target organ? Endocrine organ Target organ  A Pancreas Liver B Pancreas Kidney C Pituitary gland Liver D Pituitary gland Skeletal muscle 12. The suitable hormone to treat a person who suffers dwarfism is  A. Sex hormone B. Growth hormone C. Thyroxine D. Adrenocorticotrophic hormone 13. The table shows the effects of hormone X   Produced by corpus luteum or placenta   Promotes growth of endometrium and prevents menstruation What is X?  A. Oestrogen B. Progesterone C. Luteinising hormone D. Follicle-stimulating hormone
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