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Parkinson's disease (Characterized by tr...

Parkinson's disease (Characterized by tremors and progressive rigidity of limbs) is cause by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter

A

Acetylcholine

B

Norepinephrine

C

Dopamine

D

GABA

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The correct Answer is:
C
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Parkinson's diseases (characterised by tremorse and progressive rigidity of limbs) is caused by degeneration of brain neutrons that are involved in movement control and make use of neurotransmitter

Parkinson disease is a neurodegenerative disease, caused by deterioration of neurons. It is due to deficiency of which neurotransmitter?

Column I some disorders associated with brain. Column II the causes for these disorders. Match the two column and identify the correct option from those given: {:("Column-I","Column-II"),(A" Epilepsy", p" Degeneration of neurons in the cerebral cortex"),(B" Alzheimer's disease", q" Irregular electrical discharge in the neurons"),(C" Parkinson's disease", r" Decreased production of acetylcholine"),(D" Huntington's chorea", s" Regeneration of dopamine releasing neurons"),(,t" Formation of blood dots in the brain"):}

Read the following statements. (a) Optic lobes in humans are represented by two inferior colliculi of mid-brain. (b) Destruction of GABA secreting neurons leads to Parkinson's while Huntington's chorea is caused due to degeneration of dopamine secreting neurons. (c) Human brain is greatly convoluted, consisting of numerous gyri and sulci. (d) Amygdala is concerned with regulating moods, especially anger and rage.

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Nowadays it is possible to reduce the loss caused by pests and harmful bacteria

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The farmers today can also select seeds

MODERN PUBLICATION-NEURAL CONTROL AND COORDINATION-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)(A. MULTIPLE CHOICE QUESTIONS)
  1. In a man, abducens nerve is injured. Which one of the following functi...

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  2. One of the example of the action of the autonomous nervous system is

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  3. Parkinson's disease (Characterized by tremors and progressive rigidity...

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  4. Which of the following nerves is purely a motor nerve ?

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  5. Node of ranvier is found in

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  6. Which of the following cranial nerves is present in rabbit but absent ...

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  7. Pecten a comb-like structure is found in the eye of

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  8. Static equilibrium is maintianed by

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  9. Columella auris occurs in

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  10. Bony labyrinth of ear contians a fluid known as

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  11. Which of the following prevents internal reflection of light within th...

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  12. Identify the correct sequence of organs/ regions in the organization o...

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  13. Myelin sheath is derived from

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  14. A 22 years student goes to his opthalamologist.He has prooblem in read...

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  15. Action potential is generated by

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  16. Aqueous humour and viterous humour are divided by :

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  17. Connection between axon and dendrite is called :

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  18. Autonomic nervous system affects

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  19. A cell (or group of cells) in a sense organ which is sensitive to a pa...

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  20. Given below is a diagrammatic cross section of a single loop of human ...

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