Tag: life processes: control and coordination
Questions Related to life processes: control and coordination
Blood sugar level is an example of _______
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Positive feed back mechanism
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Negative feedback mechanism
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Both A and B
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None of these
The body has a mechanism to maintain a normal state. Whenever there is change in thus state there are messages through the body systems to increase if there is a fall below the normal , or decrease if there is rise above the normal. This kind of ordering for the opposite. Is negative feedback to restore the normal state.
Hormonal secretions are controlled by
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Feedback mechanism
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Autosomal disorder
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Genetic disorder
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None
'Too much, slow down or too little, speed up' -this is the feedback mechanism. the body has a mechanism to maintain a normal state. Whenever there is a change in this state there are messages through the body systems to increase if there is a fall below the normal, or decrease if there is rise above the normal. This kind of ordering for the opposite Is negative feedback to restore the normal state. examples of positive feedback mechanisms are very few. One example is that of uterine contractions during childbirth. The normal state of the uterus is uncontracted, one contraction instead of commanding to come to normal gives a message to continue further (positive feedback till the delivery is completed).
Uterine contraction during child birth is an example of ______
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Positive feed back mechanism
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Negative feedback mechanism
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Both A and B
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None of these
Examples of positive feed back mechanisms are very few. One example is that of uterine contractions during child birth. Normal state of uterus is un contacted, one contraction instead of commanding to come to normal gives a message to continue further (positive feedback till the delivery is completed).
'Too much, slow down or too little, speed up' this is the of
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Feedback mechanism
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Autosomal disorder
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Genetic disorder
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None
'Too much, slow down or too little, speed up' -this is the feedback mechanism. the body has a mechanism to maintain a normal state. Whenever there is a change in this state there are messages through the body systems to increase if there is a fall below the normal, or decrease, if there is a rise above the normal. This kind of ordering for the opposite Is negative feedback to restore the normal state.
Feedback mechanisms can be
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Positive
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Negative
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Both
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None
'Too much, slow down or too little, speed up' -this is the feedback mechanism. the body has a mechanism to maintain a normal state. Whenever there is a change in this state there are messages through the body systems to increase if there is a fall below the normal, or decrease if there is rise above the normal. This kind of ordering for the opposite Is negative feedback to restore the normal state. examples of positive feedback mechanisms are very few. One example is that of uterine contractions during childbirth. The normal state of the uterus is uncontracted, one contraction instead of commanding to come to normal gives a message to continue further (positive feedback till the delivery is completed).
The brain is responsible for
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Thinking
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Regulating the heart beat
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Balancing the body
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All of the above
The cerebellum is the convoluted subdivision of brain stem and is associated with coordination of muscular movement, muscle tone and balance. Medulla oblongata controls consciousness and arousal (the reticular formation) and its cardiovascular reflex centre controls heartbeat. The cerebrum is the largest and uppermost division of brain. It is the centre for higher thought processes required for learning, memory, language and speech. The correct answer is D.
Select the correct option:
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Tight
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Adhering
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Gap
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None of these
The blood-brain barrier is a dynamic conduit for transport taking place between brain and blood. The blood vessels and brain are lined with endothelial cells that are wedged tightly together, creating a nearly impermeable boundary.
Assertion: In man, only peripheral nervous system is present.
Reason: The peripheral nervous system includes nerves coursing between the central nervous system and different parts of the body.
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If both the assertion and the reason are true and the reason is the correct explanation of the assertion
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If both the assertion and the reason are true and the reason is not the correct explanation of the assertion
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If the assertion is true and the reason is false
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If both the assertion and the reason is false
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If the assertion is false but the reason is true
The nervous system of human comprises of Central Nervous System - comprises of brain and spinal cord. Peripheral Nervous System - comprises of nerves present between brain and body parts.
Endorphin release is stimulated by
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Sleep
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Endogenous rhythm
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Exercise
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Carotene-rich food
The human brain weight approximately ..........% of the body weight.
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1%
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2%
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5%
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10%