17)antiserum may be described as: a) Blood serum that contains antibodies b) Blo

Question

17)antiserum may be described as: a) Blood serum that contains antibodies b) Blood serum that contains antigens c) Blood serum that contain an antibiotic d) Bovine blood serum prior to injection of an antigen e) None of the above

18)The sources of antiserum are: a) Chemical synthesis in the laboratory b) Blood from animal that has developed antibodies to a specific antigen c) Gamma globulin separatd from pooled human blood d) All of the above e) Only B and C above

19)The major advantage of antiserum is: a) It is quickly and easily produced b)It provides circulating antibodies immediately c) It can be administered orally d) All of the above e) none of the above

27) Local inflammation and fever in whooping cough may be due to the release of: a) Exotoxins b) Endotoxins c) Extracellular enzymes d) Only A and B above e) None of the above

37)which of the following genera are lactose-fermenters? a) Excherichia b) Enterobacter c) Salmonella and shingella d) All of the above e) Only A and B above

40)The most common method for the transmission of serum hepatitis is: a) direct injection b) Respiratory secretions c) Fomities d) Contaminated water e) None of the above

Explanation / Answer

17) Antiserum may be described as :a) blood serum that contains antibodies

Antiserum is blood serum, i.e. a serum containing antibody(ies), obtained from an animal immunized either by injection of antigen or by infection with microorganisms containing antigen.

18) The sources of antiserum are: b) Blood from animal that has developed antibodies to a specific antigen

19) The major advantage of antiserum is: a) It is quickly and easily produced

27) Local inflammation and fever in whooping cough may be due to the release of: b) Endotoxins

The B. pertussis(i.e. whooping cough) bacteria release several toxins, including pertussis toxin (PT) and endotoxin. In severe cases of whooping cough disease, complications include high fever, brain inflammation, convulsions, pneumonia and death.

37) which of the following genera are lactose-fermenters? a) Excherichia

Ref. Yellow colonies formed for the E. coli k12 strain on the MacConkey purple (Table 1), thebacteria must have produced significant acid from the lactose sugar fermentation to activatethe colour change.-The identification of lactose-fermenting bacteria and determination of -galactosidase expression, Mbukeni Andrew Nkomo 2870274 BTN323 Practical Report Due:13.02.2013Department of Biotechnology University of the Western Cape

for detail follow this link-       http://www.academia.edu/2928287/The_identification_of_lactose-fermenting_bacteria_and_determination_of_%CE%B2-galactosidase_expression

40)The most common method for the transmission of serum hepatitis is: a) direct injection (i.e. infected needle, or transfusion of blood)

EXPLAINATION : The hepatitis B virus is usually spread:

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