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651.

Which of the following factors affect human health ? (i) Infections (ii) Silent mutations (iii) Life style (iv) Genetic disordersA. (i)m (ii) and (iv)B. (i) and (ii)C. (i), (iii) and (iv)D. (i), (ii), (iii) and (iv)

Answer» Correct Answer - C
Human health is affected by following three factors : (i) Genetic disorders : These are the deficiencies or defects that a child carries from parents by birth via genes.
(ii) Infections : A person gets infections from his/her surroundings.
(iii) Life style : It includes food and water we take, rest and exercise we give to our bodies and habits that we possess or lack, etc. in our life.
652.

Which of the following statements is not true for cancer cells in relation to mutationsA. Mutations destroy telomerase inhibitorB. Mutations inactivate the cell controlC. Mutations inhibit production of telomeraseD. Mutations is proto-oncogenes accelerate the cell cycle

Answer» Correct Answer - C
653.

Which of the following statements is not true for cancer cells in relation to mutationsA. Mutations destroy telomerase inhibitorB. Mutations inactivate the cell controlC. Mutations inhibit production of telomeraseD. Mutations in proto-oncogenes accelerate the cell cycle

Answer» Correct Answer - C
Cancerous cells have high telomerase activity. The maintenance of telomere stability is required for the long term proliferation of tumors. This makes telomerase a target not only for cancer diagnosis but also for the development of novel anti-cancer therapeutic agents, e.g. telomerase inhibitors are used in cancer treatment.
654.

Identify the wrong statements A. The tumor of haematopoetic cells is called leukemia B.Cancer arising from the epithelial tissues of internal organs and glands is referred as melanoma C. Sarcoma is a type of cancer where bone and cartilages are involved D. Only benign tumors are called as true cancer or neoplasmA. a and bB. b and dC. b and cD. a and c only

Answer» Correct Answer - B
655.

Which of the following statements is not true for cancer cells in relation to mutationsA. Mutations inhibit production of telomeresB. Mutations in proto-oncogenes accelerate the cell cycleC. Mutations destory telomerase inhibitorD. Mutations inactivate the cell control

Answer» Correct Answer - A
656.

Canner cells are damaged by radiations while others are not due to cancer cellsA. Being starvedB. Being different in natureC. Immature and undergoing rapid divisionD. None of the above

Answer» Correct Answer - C
657.

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidenceA. serum globulinsB. fibrinogen in plasmaC. Serum albuminsD. Haemocytes

Answer» Correct Answer - A
658.

Assertion (A): Many visitors to the hills suffer from skin and respiratory allergy problems. Reason (R): Conifer trees produce a large quantity of wind- borne pollen grains.A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark a.B. If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark b.C. If Assertion is true statement but Reason is false, then mark c.D. If both Assertion and Reason are false statements, then mark d.

Answer» Correct Answer - A
659.

A person injured in a road accident and requiring and urgent immune response was brought to a doctor. (a) What did the doctor immediately do? (b) What kind of an immunity was he providing to the patient. (c) Define this kine of immunity.

Answer» (a) Doctor gives first aid for immediate relief from pain due to injury.
(b) Passive immunity was provided to the patient.
660.

Vaccine produced using method of recombinant DNA technology is :-

Answer» Correct Answer - Hepatitis-B
661.

A cell-coded protein that is formed in response to infection with most animal viruses is calledA. AntigenB. AntibodyC. InterferonD. Histone

Answer» Correct Answer - C
662.

Which one is correctly matched ?A. Oncogenes-AgeingB. Initiation factors-Amino acid activationC. Replication fork-m RNAD. AIDS virus-Reverse transcription

Answer» Correct Answer - D
663.

Syphilis is caused byA. Treponema pallidumB. LeptospiraC. PasteurellaD. Vibrio

Answer» Correct Answer - A
664.

Which Ig is produced in primary immune response or Which antibody is first to be released into blood following an infectionA. IgAB. IgEC. IgGD. IgM

Answer» Correct Answer - D
665.

Is the skin surface acidic or alkaline?

Answer» Correct Answer - Acidic.
666.

In the life cycle of Wuclereria , third and fourth moults of microfilaria take place inA. Lymph vessels of manB. Salivary glands of mosquitoC. Thoracic muscles of mosquitoD. Stomach of mosquito

Answer» Correct Answer - A
667.

Tumour promoter isA. Oncogene promoting cancerB. Substance that produces tumourC. Substance that activates transcription in cancer cellsD. All the above

Answer» Correct Answer - C
668.

Give the meaning of diapedesis.

Answer» Escape of WBCs from capillaries.
669.

Identify the tumour suppressor gene/Guradian Angel of GenomeA. OncogeneB. P53C. PseudogeneD. SRY

Answer» Correct Answer - B
670.

What is commercial tobacco?

Answer» Dried cured leaves of yound branches of Nicotian tobacum and N. rustica.
671.

Give the role of the gene P 53.

Answer» Helps protect the body from cancer.
672.

Which is the World No Tobacco Day?

Answer» Correct Answer - May 31.
673.

Mention the effect of CO present in tobacco smoke.

Answer» Reduced `O_(2)` supply to tissues.
674.

Give three diseases caused by smoking ?

Answer» Bronchitis, oral the lung cancer, atherosclerosis (constricted arteries).
675.

Mention one carcinogenic chemical present in tobacco smoke.

Answer» Correct Answer - Benzpyrene.
676.

Name the addiction-causing component of tobacco smoke.

Answer» Correct Answer - Nicotine.
677.

The substance that causes addiction to tabacco is:A. nicotineB. cocaineC. caffeineD. none of these

Answer» Correct Answer - A
678.

Name the term WHO prefers instead of addiction.

Answer» Correct Answer - Dependence.
679.

Give the source of opium.

Answer» Capsules of white poppy plant, Papaver somniferum.
680.

ATS inoculation soon after injury bringiing contact with soiled objects gives protection against the possible attack ofA. TetanusB. TyphoidC. PoliomyelitisD. Mumps

Answer» Correct Answer - A
681.

What is a social disease?

Answer» Dependence on habituating agents.
682.

A disease caused by corkscrew like bacterium isA. GonorrhoeaB. SyphilisC. SalmonellosisD. Whooping cough

Answer» Correct Answer - B
683.

A disease contracted through wounds, accidents and improperly sterilised surgical instruments isA. TetanusB. GonorrhoeaC. MumpsD. Amoebiasis

Answer» Correct Answer - A
684.

What is true about Bt toxin?A. The concerned Bacillus has antitoxins. The inactive protoxin gets converted into active form in the insect gutB. Bt protein exists as active toxin in the Bacillus.C. Bt protein exists as active as toxin in the Bacillus.D. The activated toxin enters the ovaries of the pest to sterilise it and thus prevents its multiplication

Answer» Correct Answer - B
685.

AIDS is caused by HIV. Among the following, which one in not a mode of transmission of HIV ?A. Transfusion of contaminated bloodB. Sharing the infected beedlesC. Shaking hands with infected personsD. Sexual contact with infected person

Answer» Correct Answer - C
686.

AIDS is caused by HIV. Among the following, which one in not a mode of transmission of HIV ?A. Transfusion of contaminated blood.B. Sharing the infected needles.C. Shaking hands with infected persons.D. Sexual contact with infected persons.

Answer» Correct Answer - C
AIDS is a result of an infection by the human immuno deficiency virus (HIV). Virus of AIDS is transmitted via blood and semen by
- transfusion of infected blood or blood products
- use of contaminated needles and syringes to inject drugs or vaccines
- use of contaminated razors
- use of contaminated needles for boring pinnae
- sexual intercourse with an infected partner without a condom
- from infected mother to child through placenta
- artifical insemination
- organ transplant.
687.

Micro-organisms commonly causing diarrhoeal diseases areA. Esherichia coli, Shigella species , Campylobacter and Bacillus pertussisB. Clostridium tetani, Giardia, EntamoebaC. Escherichia coli, Giardia, Shigella, Campylobacter and SalmonellaD. Neisseria, Treponema, Escherichia, Giardia , Shigella, Campylobacter and Salmonella.

Answer» Correct Answer - C
688.

Multiple sclerosis is caused by attack of antibodies overA. Sarcolemma of muscle cellsB. Cartilage coverC. Myelin sheath of nerve cellsD. Periosteum

Answer» Correct Answer - C
689.

To which category multiple sclerosis belong?A. Immunodeficiency diseasesB. Auto-immune diseasesC. HypersensitivityD. All of the above

Answer» Correct Answer - B
690.

Cancer is generally caused due to activation of ………..to ………….and/or inactivation of ……….A. Oncogene, tumour suppressor gene, protooncogeneB. Tumour suppressor gene, oncogene, protooncogeneC. Oncogene, protooncogene, tumour suppressor geneD. Protooncogene, oncogene, tumour suppressor gene

Answer» Correct Answer - D
691.

Antomci barrier to disease isA. SkinB. Mucous membraneC. Mucus and ciliaD. All the above

Answer» Correct Answer - D
692.

Lysozyme isA. AntiviralB. AntibacterialC. AntiprotozoanD. All the above

Answer» Correct Answer - B
693.

Lysozyme occurs inA. TearsB. Tears and salivaC. Tears , saliva , sweat and mucusD. Gastric juice

Answer» Correct Answer - C
694.

What is the function of lymphocytesA. destruction of poisonous substancesB. detruction of bacteriaC. destruction of RBCD. none of above

Answer» Correct Answer - B
695.

After entering T-cell , HIV first formsA. m RNAB. ss DNAC. ds DNAD. ds RNA

Answer» Correct Answer - B
696.

Who discovered oocystes in the stomach of female Anopheles ?A. GolgiB. LambleC. Ronald RossD. Charles Lavern

Answer» Correct Answer - C
697.

The letter T in T-lymphocytes refers toA. ThyroidB. ThymusC. ThalamusD. Tonsil

Answer» Correct Answer - B
698.

Wuchhereria is found inA. LungsB. Lymph nodesC. EyeD. Gonads

Answer» Correct Answer - B
699.

ImmunomodulatorsA. Stimulate immune systemB. Suppress immune systemC. Some stimulate, others inhibit immune systemD. Never suppress immune system

Answer» Correct Answer - C
700.

Find out the odd one for parasitismA. Bed bugB. LiceC. MiteD. Plasmodium

Answer» Correct Answer - D