Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 Bachelor of Veterinary Science & Animal-Husbandary for competitive -paper18

MULTIPLE option ques.
VETERINARY SCIENCE & ANIMAL HUSBANDRY
(For Competitive exam of Veterinary Science)

Swine Influenza virus associated with current pandemic in humans is
a. H1N1
b. H2N2
c. H3N2
d. H5N1

Chief source of leptospira is
a. Blood
b. Urine
c. Milk
d. Faeces

Growth of brucella organisms is favored due to
a. Erythritol
b. Sorbitol
c. Glucose
d. Protein

E.coli
a. Grows at 15-400 C.
b. Lactose fermenter
c. Motile
d. All of these

Spore forming bacteria
a. Bacillus
b. Clostridium
c. Both a and b
d. None

Isoschizomers are Restriction enzymes which:
a. Recognize and cut the identical sequence
b. Recognize the identical sequence but cut site vary
c. Both
d. None

Neoschizomers are Restriction enzymes which:
a. Recognize and cut the identical sequence
b. Recognize the identical sequence but cut site vary
c. Both
d. None

The enzymes used for joining 2 DNA molecule is:
a. DNA gyrase
b. DNA ligase
c. Topoisomerase
d. Helicase

Which of the subsequent has the highest density:
a. Relaxed genomic DNA
b. Supercoiled DNA
c. Plasmid
d. RNA

Homo polymer tail can be added by using enzyme:
a. Ligase
b. Phosphate kinase
c. Terminal deoxytransferase
d. None

The plasmid which is maintained in the host cell in multiple copies are called:
a. Relaxed
b. Stringent
c. Conjugative
d. None

The plasmid which is maintained in the host cell in limited number of copies are called:
a. Relaxed
b. Stringent
c. Conjugative
d. None

RNAs that catalyze biological reactions, such as self-splicing introns, are known as:
a. Enzyme
b. Ribozyme
c. Sliceosome
d. None

The two µm plasmid is obtained in:
a. Escherichia coli
b. Pneumococcus
c. Bacillus anthracis
d. Sacchromyces cerevisiae

Which of the subsequent statement is actual for life cycle of Lysogenic phages:
a. They immediately induce lysis of host cells for release of new virions
b. Phage DNA is integrated with the host DNA and retained for several generations
c. Both the above depending upon the environmental condition
d. None of the above

Genes cloned with M 13 based vector can be found in the form of:
a. Single stranded DNA
b. Double stranded DNA
c. Single stranded RNA
d. None of the above

At 600 nm, 1 unit optical density (OD) of E. coli culture corresponds roughly to:
a. 1 X 106 cells/ml
b. 1 X 107 cells/ml
c. 1 X 108 cells/ml
d. 1 X 109 cells/ml

EDTA current in lysis solution has subsequent functions:
a. Chelates Mg++ ions and thus inhibits the activity of enzyme DNase
b. Removes Mg++ ions that are essential for preserving the overall structure of cell envelope
c. Both of the above
d. None of the above

Which of the subsequent match is incorrect:
a. SDS: Cell Lysis
b. EDTA: Chelating Mg++ ions
c. Proteinase K: Degradation of Protein
d. Isoamyl alcohol: precipitation of DNA

CTAB used is isolation of DNA forms complexes with:
a. DNA
b. Proteins
c. Carbohydrates
d. None of The above

Earning:   Approval pending.