Increased muscular activity leads to increased paralysis

All are true regarding diphtheria toxin EXCEPT -

Toxin blocks elongation of protein

Beta lysogenic strain produces toxin

Iron in culture for toxin production

Toxin is necessary for local wound production

Dolichol phosphate is

a complex lipid involved in docking vesicles with the plasma membrane

the anchor on which sugars assemble before transfer to proteins

a complex lipid involved in docking vesicles with the plasma membrane

a product of phospholipase C activation

a chaperone used in protein folding

Diptheria is characterized by all except

Causes striking edematous swelling of cervical region

Most common clinical form being faucial

All of the following statements about Leptospirosis are true,Except:

Mortality is 5-15 % in severe cases.

Infection acquired by direct contact with infected urine

IV peniciline is recommended for treatment of severe cases

Antibodies are usually detectable in the first week

The nonsymbiotic bacteria which fix nitrogen live in the soil independently are

considerably less important in comparison to the symbiotic bacteria

The commonest Primary immunodeficiency is

Common variable immunodeficiency

True about V.Cholerae is :

One attack of V.Cholerae gives live-long immunity

Affects adults and children with equal propensity in non epidenic regions

In between epidemics,carrier states maintain the organism

Pathogencity of 0-139 vibrio is due to O antigen

All are true regarding cytomegalovirus except:

Most common cause of congenital viral infection

Most commonly infected in last trimester

Diagnosed by increased IgA in fetal blood

Most common cause of congenital viral infection

Decreased PMN release from bone marrow

Pertusis toxin acts by all of the following mechanisms except

ADP ribosylation of proteins associated with receptors

Increased calcium release from sarcoplasmic reticulam

True regarding pseudomembranous colitis are all except:

The organism is a normal commensal of gut

It is caused by clostridium difficile

It is due to production of phospholipase A

Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?

Methanotrophs (methane-oxidizing microbes)

Acetogens (acetigens; acetate-producing microbes)

Methanogens (methane-producing microbes)

Requires carrier for specific antibody production

Primary differences between cilia and flagella are

how the microtubules are fused to each other

length and location of basal bodies

number, length and direction of force

how the microtubules are fused to each other

Which of the following is false about clostridium perfringes-

Food poisoning causing strains of cl. perfringes produce heat resistant Spores

Cl. perfringes is the most common cause of gas gangrene

Most important toxin is hyaluronidase

859 + Mcqs in Mems Page 9 McqOptions

401.	True about polio -
A.	Spastic paralysis
B.	Paralytic polio is most common
C.	Polio drop given only <3 year
D.	Increased muscular activity leads to increased paralysis
Answer» E.

Discussion

402.	Non pathogenic mycobacterium is ?
A.	M.smegmatis
B.	M.Balnei
C.	M.Ulcerans
D.	M.Xenopii
Answer» B. M.Balnei

Discussion

403.	Which of the following is not employed as an oxidation method?
A.	Trickling filters
B.	Oxidation ponds
C.	All of these
D.	Contact aerators
Answer» D. Contact aerators

Discussion

404.	In which parasitic infestation sputum examination is not of much value -
A.	Trichuris trichura
B.	Strongyloides
C.	Ancyclostoma duodenale
D.	Paragonimus Westermanii
Answer» D. Paragonimus Westermanii

Discussion

405.	Gonorrhea can be identified by ?
A.	Growth of MacConkey medium
B.	Growth at 37 Degree C
C.	By the fermentation of glucose
D.	Growth in 45%/60% bile
Answer» D. Growth in 45%/60% bile

Discussion

406.	Which of the following antigen is found within the nuclei of infected hepatocytes and NOT usually in the peripheral circulation in Hepatitis B infection ?
A.	HBe Ag
B.	HBc Ag
C.	Anti-HBc
D.	HBs Ag
Answer» C. Anti-HBc

Discussion

407.	The mass of an electron is
A.	1⁄1840 of a neutron
B.	1⁄1840 of a proton
C.	None of Above
D.	Both A and B
Answer» E.

Discussion

408.	A five year old child presents with pustular lesions on the lower legs.The culture from the lesion showed hemolytic gram positive coccii.Provisional diagnosis of Group A streptococcal pyoderma can be done by:
A.	Bile solubility
B.	Bacitracin sensitivity
C.	Catalase positivity
D.	Optochicin sensitivity
Answer» C. Catalase positivity

Discussion

409.	Most common cause of chronic granulomatous disease in children is:
A.	Defective phahgocytosis
B.	Myeloperoxidase deficiency
C.	Job's disease
D.	Defective H2O2 production
Answer» E.

Discussion

410.	TCA cycle functions in
A.	anabolic reactions
B.	catabolic reactions
C.	none of these
D.	amphibolic reactions
Answer» E.

Discussion

411.	All are true regarding diphtheria toxin EXCEPT -
A.	Toxin blocks elongation of protein
B.	Beta lysogenic strain produces toxin
C.	Iron in culture for toxin production
D.	Toxin is necessary for local wound production
Answer» E.

Discussion

412.	Most common agents responsible for human bite infections are:
A.	Spirochaete
B.	Anaerobic streptococci
C.	Gram-ve bacilli
D.	Gram+ve bacilli
Answer» C. Gram-ve bacilli

Discussion

413.	Dolichol phosphate is
A.	the anchor on which sugars assemble before transfer to proteins
B.	a complex lipid involved in docking vesicles with the plasma membrane
C.	a product of phospholipase C activation
D.	a chaperone used in protein folding
Answer» B. a complex lipid involved in docking vesicles with the plasma membrane

Discussion

414.	Pruteen is made by mixing bacteria in
A.	methanol
B.	ethanol
C.	petroleum
D.	Vaseline
Answer» B. ethanol

Discussion

415.	Diptheria is characterized by all except
A.	Endotoxemia
B.	Causes striking edematous swelling of cervical region
C.	Pseudomembrane formation
D.	Most common clinical form being faucial
Answer» B. Causes striking edematous swelling of cervical region

Discussion

416.	All of the following statements about Leptospirosis are true,Except:
A.	Mortality is 5-15 % in severe cases.
B.	Infection acquired by direct contact with infected urine
C.	IV peniciline is recommended for treatment of severe cases
D.	Antibodies are usually detectable in the first week
Answer» E.

Discussion

417.	Which of the following is the most primitive?
A.	Eukaryote
B.	Virus
C.	Mitochondria
D.	Archaeon
Answer» E.

Discussion

418.	Charcot Leyden crystals are derived from ?
A.	Macrophages
B.	Eosinophils
C.	Basophils
D.	Neutrophils
Answer» C. Basophils

Discussion

419.	Who discovered the bacteria that cause cholera?
A.	Robert Koch
B.	Pierre Berthelot
C.	Rudolf Virchow
D.	Louis Pasteur
Answer» B. Pierre Berthelot

Discussion

420.	Culture media used for diagnosis of EHEC O157: H7 is:
A.	Sorbitol Mac Conkey media
B.	O7 culture
C.	Deoxycholate Media
D.	XLD Agar
Answer» B. O7 culture

Discussion

421.	The nonsymbiotic bacteria which fix nitrogen live in the soil independently are
A.	Clostridium
B.	Azotobacter
C.	all of the above
D.	considerably less important in comparison to the symbiotic bacteria
Answer» D. considerably less important in comparison to the symbiotic bacteria

Discussion

422.	Food poisoning that present within 6 hours is due to ?
A.	Staphylococcus
B.	Salmonella
C.	Clostridium botulinum
D.	E. coli
Answer» B. Salmonella

Discussion

423.	Bacterial zoonosis A/e
A.	Leptospiroris
B.	Brucellosis
C.	Plague
D.	Hydatid cyst
Answer» E.

Discussion

424.	Which of the following genetic elements carry the genes required for integration into host chromosomes?
A.	Plasmids
B.	Replicon
C.	Tandons
D.	Transposons
Answer» B. Replicon

Discussion

425.	Reassortment is seen in -
A.	Rotavirus
B.	Astronovirus
C.	Herpesvirus
D.	Hepadnavirus
Answer» B. Astronovirus

Discussion

426.	The tick borne hemorrhagic fever found in Karnataka state is
A.	Japanese encephalitis
B.	Kyasanur Forest Disease
C.	Epidemic nephrosonephritis
D.	Lassa fever
Answer» C. Epidemic nephrosonephritis

Discussion

427.	Most common causes of Traveller's diarrhoea -
A.	Enteropathogenic E. coli
B.	Enteroinvasive E. coli
C.	Enterotoxigenic E. coli
D.	Enterohemorrhagia E. coli
Answer» D. Enterohemorrhagia E. coli

Discussion

428.	Which of the following cell types are the most ponent activators of naive T cells
A.	Follicular Dendritic cells
B.	B cells
C.	Macrophages
D.	Mature Dendritic cells
Answer» E.

Discussion

429.	Which is not a major defense mechanism in the stomach?
A.	Low pH
B.	Proteolytic enzymes
C.	All of these
D.	Dense normal flora
Answer» E.

Discussion

430.	The commonest Primary immunodeficiency is
A.	Common variable immunodeficiency
B.	Isolated IgA immunodeficiency
C.	Wiskott-Aldrich syndrome
D.	AIDS
Answer» C. Wiskott-Aldrich syndrome

Discussion

431.	True about V.Cholerae is :
A.	One attack of V.Cholerae gives live-long immunity
B.	Affects adults and children with equal propensity in non epidenic regions
C.	In between epidemics,carrier states maintain the organism
D.	Pathogencity of 0-139 vibrio is due to O antigen
Answer» E.

Discussion

432.	Phase mediate transfer of cDNA into host is known as ?
A.	Trsansduction
B.	Transformation
C.	Transmission
D.	Conjugation
Answer» B. Transformation

Discussion

433.	Which of the following is not true of Actinomycosis
A.	Demonstration of filaments
B.	Caused by actinomyces israelii
C.	Organism can not be cultured
D.	Sulphur granules in pus
Answer» D. Sulphur granules in pus

Discussion

434.	Stain used in electron microscopy ?
A.	2.5% glutraldehyde
B.	Phosphotungstic acid
C.	Saffranin
D.	Coomassie blue
Answer» C. Saffranin

Discussion

435.	All are true regarding cytomegalovirus except:
A.	It is DNA virus
B.	Most commonly infected in last trimester
C.	Diagnosed by increased IgA in fetal blood
D.	Most common cause of congenital viral infection
Answer» D. Most common cause of congenital viral infection

Discussion

436.	Which of the following does not cause cavitation:
A.	Staphylococcus
B.	Histoplasma
C.	Viral infection
D.	Neoplasm
Answer» D. Neoplasm

Discussion

437.	Epidemiologic study of Hepatitis B is -
A.	HBe Ag
B.	HBc Ag
C.	HBs Ag is used
D.	Anti HBc
Answer» E.

Discussion

438.	IL-1 produces
A.	Increased pain perception
B.	Decreased PMN release from bone marrow
C.	T-lymphocyte activation
D.	Delayed wound healing
Answer» D. Delayed wound healing

Discussion

439.	Which Michael Crichton novel was published in 1990?
A.	Timeline
B.	The Great Train Robbery
C.	Prey
D.	Jurassic Park
Answer» E.

Discussion

440.	Pertusis toxin acts by all of the following mechanisms except
A.	Increase cyclic AMP
B.	ADP ribosylation of proteins associated with receptors
C.	Acts through G alpha subunit
D.	Increased calcium release from sarcoplasmic reticulam
Answer» E.

Discussion

441.	CAMP test is used to detect infection caused by -
A.	Streptococcus equsimilis
B.	Streptococcus agalactiae
C.	Streptococcus viridans
D.	Staphylococcus aureus
Answer» B. Streptococcus agalactiae

Discussion

442.	True regarding pseudomembranous colitis are all except:
A.	The organism is a normal commensal of gut
B.	It is caused by clostridium difficile
C.	It is treated by vancomycin
D.	It is due to production of phospholipase A
Answer» E.

Discussion

443.	Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?
A.	Methanotrophs (methane-oxidizing microbes)
B.	Sulfate-reducing bacteria
C.	Acetogens (acetigens; acetate-producing microbes)
D.	Methanogens (methane-producing microbes)
Answer» E.

Discussion

444.	Heptane is:
A.	Small molecular weight protein
B.	Same as epitope
C.	Simple haptens are precipitate
D.	Requires carrier for specific antibody production
Answer» E.

Discussion

445.	Primary differences between cilia and flagella are
A.	length and location of basal bodies
B.	arrangement of microtubules
C.	number, length and direction of force
D.	how the microtubules are fused to each other
Answer» D. how the microtubules are fused to each other

Discussion

446.	Which of the following produces pocks on chorioallantoic membrane of chick embryo -
A.	Myxovirus
B.	Varicella
C.	Herpes simplex
D.	Cytomegalovirus
Answer» D. Cytomegalovirus

Discussion

447.	Which of the following is false about clostridium perfringes-
A.	Show positive naegler reaction
B.	Food poisoning causing strains of cl. perfringes produce heat resistant Spores
C.	Cl. perfringes is the most common cause of gas gangrene
D.	Most important toxin is hyaluronidase
Answer» E.

Discussion

448.	Drug resistance in tuberculosis is due to
A.	Transformation
B.	Transduction
C.	Conjugation
D.	Mutation
Answer» E.

Discussion

449.	The five-kingdom system of classification was set up by
A.	Robert Whittaker
B.	Louis Pasteur
C.	Masaki Ogata
D.	Robert Koch
Answer» B. Louis Pasteur

Discussion

450.	A farmer presents with pustules,which show Gram Positive Cocci on smear.Culture shows Beta hemolysis,and organisms are Catalase negative.To show that the identified organism is group A streptococci,which of the following test should be done?
A.	Bacitracin sensitivity
B.	Optochin sensitivity
C.	Novobiocin sensitivity
D.	Bile solubility
Answer» B. Optochin sensitivity

Discussion

Explore topic-wise MCQs in Cloud Computing.

True about polio -

Non pathogenic mycobacterium is ?

Which of the following is not employed as an oxidation method?

In which parasitic infestation sputum examination is not of much value -

Gonorrhea can be identified by ?

Which of the following antigen is found within the nuclei of infected hepatocytes and NOT usually in the peripheral circulation in Hepatitis B infection ?

The mass of an electron is

A five year old child presents with pustular lesions on the lower legs.The culture from the lesion showed hemolytic gram positive coccii.Provisional diagnosis of Group A streptococcal pyoderma can be done by:

Most common cause of chronic granulomatous disease in children is:

TCA cycle functions in

All are true regarding diphtheria toxin EXCEPT -

Most common agents responsible for human bite infections are:

Dolichol phosphate is

Pruteen is made by mixing bacteria in

Diptheria is characterized by all except

All of the following statements about Leptospirosis are true,Except:

Which of the following is the most primitive?

Charcot Leyden crystals are derived from ?

Who discovered the bacteria that cause cholera?

Culture media used for diagnosis of EHEC O157: H7 is:

The nonsymbiotic bacteria which fix nitrogen live in the soil independently are

Food poisoning that present within 6 hours is due to ?

Bacterial zoonosis A/e

Which of the following genetic elements carry the genes required for integration into host chromosomes?

Reassortment is seen in -

The tick borne hemorrhagic fever found in Karnataka state is

Most common causes of Traveller's diarrhoea -

Which of the following cell types are the most ponent activators of naive T cells

Which is not a major defense mechanism in the stomach?

The commonest Primary immunodeficiency is

True about V.Cholerae is :

Phase mediate transfer of cDNA into host is known as ?

Which of the following is not true of Actinomycosis

Stain used in electron microscopy ?

All are true regarding cytomegalovirus except:

Which of the following does not cause cavitation:

Epidemiologic study of Hepatitis B is -

IL-1 produces

Which Michael Crichton novel was published in 1990?

Pertusis toxin acts by all of the following mechanisms except

CAMP test is used to detect infection caused by -

True regarding pseudomembranous colitis are all except:

Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?

Heptane is:

Primary differences between cilia and flagella are

Which of the following produces pocks on chorioallantoic membrane of chick embryo -

Which of the following is false about clostridium perfringes-

Drug resistance in tuberculosis is due to

The five-kingdom system of classification was set up by

A farmer presents with pustules,which show Gram Positive Cocci on smear.Culture shows Beta hemolysis,and organisms are Catalase negative.To show that the identified organism is group A streptococci,which of the following test should be done?