Assertion: Cancer cells are virtually immortal until the body in

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 Multiple Choice QuestionsMultiple Choice Questions

161.

An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as

  • histamine and dopamine

  • histamine and kinins

  • interferons and opsonin

  • interferons and histones


162.

mong rust, smut and mushroom all the three

  • are pathogens 

  • are saprobes

  • bear ascocarps 

  • bear basidiocarps.


163.

A young drug addict used to show symptoms of depressed brain activity, feeling of calmness, relaxation and drowsiness. Possibly he was taking

  • amphetamine

  • marijuna

  • pethidine

  • valium


164.

Antigen binding site in an antibody is found between

  • two light chains

  • two heavy chains

  • one heavy and one light chain

  • either between two light chains or between one heavy and one light chain depending upon the nature of antigen


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165.

Assertion: A person who has received a cut and is bleeding needs to be given anti-tetanus treatment.

Reason: Anti-tetanus injection provides immunity by producing antibodies for tetanus.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


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166.

Assertion: Cancer cells are virtually immortal until the body in which they reside dies.

Reason: Cancer is caused by damage to genes regulating the cell division cycle.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


B.

If both assertion and reason are true but reason is not the correct explanation of assertion

Cancer is a growth disorder of cells. It starts when an apparently normal cell begins to grow in an uncontrolled and invasive way. The result is a cluster of cells, called a tumor, that constantly expands in size.

Cells that leave the tumor and spread throughout the body, forming new tumors at distant sites, are called metastases. Cancer is a gene disorder of somatic tissue, in which damaged genes fail to properly control cell proliferation. The cell division cycle is regulated by a sophisticated group of proteins. Cancer results from the mutation of the genes encoding these proteins. More than one mutation is necessary for carcinogenesis. In fact, a series of several mutations to certain classes of genes is usually required before a normal cell will transform into a cancer cell. Only mutations in those certain types of genes which play vital roles in cell division. cell death, and DNA repair will cause a cell to lose control of its proliferation.

Cancer can be caused by chemicals that mutate DNA or in some instances by viruses that circumvent the cell's normal proliferation controls. Whatever the immediate cause, however, all cancers are characterized by unrestrained growth and division. Cell division never stops in a cancerous line of cells. Cancer cells are virtually immortal until the body in which they reside dies.


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167.

Assertion: Inflammation of a skeletal joint may immobilize the movements of the joint.

Reason: Uric acid crystals in the joint cavity and ossification of articular cartilage lead to this

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


168.

Assertion: Escherichia coli, Shigella sp. and Salmonella sp. are all responsible for diarrhoeal disease.

Reason: Dehydration is common to al I types of diarrhoeal diseases and adequate supply of fluids electrolytes should be ensured.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


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169.

Assertion: LSD and marijuana are clinically used as analgesics.

Reason: Both these drugs suppress brain function.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


170.

Which one of the following is a matching pair of a drug and its category

  • Amphetamines - stimulant

  • Lysergic acid dimethyl amide - narcotic

  • Heroin - psychotropic

  • Benzodiazepine - pain killer


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