MCQs of MicroBiology – General Microbiology

The predominant immunoglobulin in saliva is:

Immunoglobulin crossing placenta is

Steam under pressure in used in ____ sterilization

The term animalcules to oral microorganisms is given by:

The chemotactic factor is:

Which of the following immunoglobulins has the highest mean serum concentration in humans

Example of immune complex hyper-sensitivity reaction is:

In patients with asthma due to an allergic cause the serum levels of which immunoglobulin increase:

The best sterilization method for a hand-piece is

Type of receptor present on T-cells are

The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is:

Hot air oven cannot be used for sterlisling:

Dark ground microscopy is useful to identify:

Zero growth rate is observed during one of the phase of the bacterial growth curve:

The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain:

Exotoxins are:

The Ig found in exocrine secretions is:

By using phase contrast microscope:

Bacterial spores are destroyed by:

Blood agar is:

Which of the following is not a feature of anaphylaxis?

The difference between sterilization and disinfection is that:

compared with autoclave, use of a dry heat over for sterilization has the following disadvantages:

The component that sensitizes bacteria and virus to UV irradiation

Sterilisation is:

Disinfection of the rooms can be done by using:

Rideal Walker test is used to determine the efficiency of the:

Who first introduced solid media:

All are not true for cultivation of anaerobic organisms except:

Sterilization of liquid paraffin is done by:

Multiple drug resistance of bacteria depends on which of the following:

Glutaraldehyde is preferred more than formaldehyde because:

The major antiseptic value of soap lies in its ability to:

Best method of sterilizing disposable syringes

Which of the following antibacterial substance is present in eggs and saliva?

A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called:

Most antibodies are produced in the:

Tyndallisation is carried out for:

The optimal time and temperature required for sterilization in an autoclave is:

Sunlight acts as sterilizing agent because

Immunoglobulin implicated in atopy and anaphylaxis is:

Which of the following is not true of boiling water

Synthesis of antibodies in plasma cells occurs in:

In penicillin allergy, penicillin acts as a:

Which of the following is an enrichment medium

Which of the following is not a koch’s postulate?

An example of naturally acquired passive immunity is:

The anaphylaxis should be treated first with:

Disinfection frees the surface from

Dry heat destroys microorganisms by:

A darkfield microscope would be useful in examining blood for:

Robertsons cooked meat medium is best suited for cultivation of:

Immunoglobulins ar secreted by:

The medium of choice for growing most fungi is:

Serum sickness syndrome is an example of:

The distinguishing characteristic of a positive delayed type hypersensitivity skin test is:

Secretory Ig is:

Human immunoglobulins are divided based on:

The binding site for complement on the IgG molecule is in the:

IgG antibodies have a half-life of approximately

The immediate type of hypersensitivity in which histamine doses not play a major role is:

Toxoids are:

Detergents used to disinfect dental instruments in the office kill bacteria by interfering with functional of the cell

IgG has subclasses

Endotoxins differ from exotoxins in that endotoxins

Adjuvant given along with antigens are going to:

Sterilisation control for moist heat is “or” The efficacy of the moist heat sterilization technique commonly used to sterlilize laboratory ware and culture media is tested by using:

Following reaction are produced by heterophil antigens except:

B.C.G untrue is:

Characters of exotoxin include all, except:

First released immunoglobulin after primary immunization

Anaerobic bacteria can be cultured in:

Exaltation is:

Louis Pasteur is not associated with

Bacteria with tuft of flagella at one end are called:

The usual concentration of agar used in agar medium is:

One of the following staining methods is an example of negative staining

The best skin disinfectant is:

Noguchi’s medium is used for:

Culture medium for corynebacterium diphtheria

Smith noguchi’s media is used for

Dorset’s egg medium is used for cultivation of:

Graft versus host reaction is caused by:

The mechanism of genetic transfer where a phage serves as a vehicle is:

Sporulation occurs in:

Mesophilic organisms are those that grow best at temperature of:

Which of the following organisms are arranged in cubical packets of eight cocci

Flash pasteurization of milk is done at what temperature

Hospital dressing is best disposed by:

Spores are disinfected by:

Operation theatres are sterilized by:

Most of the drug resistances occurs due to

Plasmid

The antigen used in Weil Felix test is obtained from

Immunoglobin, Which is produced first by the fetus in response to infection

Endotoxins are produced by:

Phagocytosis enhanced by coating the surface of antigen is called

Opsonisation is by:

The exact part of the antigen that reacts with the immune system is called as:

Antigen combining site of the antibody is:

Immunoglobulin consists of:

Function of Ig A is:

Secretory piece of IgA is synthesized in:

Complement binding immunoglobin via the classical pathway is:

VDRL is a:

Most sensitive test for antigen detection is

Delayed tuberculin test response is due to:

Prozone phenomenon is due to:

Haptane is:

Virus infected cell is killed by:

Function of T-lymphocyte is/are:

IL-1 and TNF a during inflammation are secreted by:

Glasswares are sterilised by:

The protective effects breast milk are known to be associated with:

The serum concentration of which of the following human IgG subclass is maximum?

Immunity that is conferred to the foetus by transfer of IgG and IgA antibodies is called as:

Which of the following provides best gurantee for sterlization in the heat sterilizer?

Active artificial immunization is induced by the administration of all of the following EXCEPT:

Selective media for MYCOBACTERIUM

Type I hypersensitivity is mediated by which of the following immunoglobulins?

Which of the following are correctly matched?

A woman with infertility receives an ovary transplant from her sister who is an identical Twin. What type of graft it is?

Techoic acid is present in:

Cold sterilization refers to the process of sterilization by use of:

Which of the following is a live vaccine:

The prototype of Type II hypersensitivity reaction is:

Type IV hypersensitivity reaction is mediated by which of the following:

The killer cells are associated with immunologic response

Grave’s disease is an example of type immunologic response:

Rh incompatibility is which type of hyper sensitivity reaction?

IL-1 is produced by:

Same or closely related antigens present in different biological species are known as:

CD4 cells recognize the antigens in association with:

T cells multiplication is stimulated by:

T cell matures in:

Killer and Helper cells are part of:

Which component of the cell wall is responsible

Endoscopes are sterilized by using:

Moist heat kills all of the following EXCEPT:

Hot air oven is used for sterilization of all EXCEPT:

One of the following statement about statements about sterilization is not true:

Oil and Grease are sterilized by:

The best method of sterilization of dressing powder is:

Which of the following is true about pasteurization?

Physical sterilization was discovered by:

Portion of immunoglobulin molecule with molecular weight to 50000:

Cleavage of IgG molecule by Papin gives rise to:One F_c fragment and two F_ab fragments

Secondary response is mediated by:

Pentameric structure:

The function of IgD is:

The reaginic antibody is:

The type of immunoglobulin most commonly increased in multiple myeloma is:

The following immunoglobulin is not known to fix complement

Cell wall deficient bacteria are:

The earliest identifiable cells of T-Cell lineage during maturation are:

Purpose of Sterilization is to eliminate

A person working in an abattoir presented with a papule on hand, which turned in to an ulcer. Which will best help in diagnosis

A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism?

Which is type II hypersensitivity?

The Manufacturing unit of surgical needle & sutures are sterilized by?

When horse serum is injected intravenoulsy in to a rabbit and again in to the skin two or three weeks later, what is the necrotizing reaction that occurs as the site of the second injection

Bacterial cell does not possess:

Negative phase is seen in ____ immunity

Post streptococcal acute glomerulo nephritis is an example of:

The cell wall deficient bacteria

The Process of attenuation can be achieved by all except: