Question:
Brucella abortus Indian Biovar(s) has following characteristics:
A. It is modified Z N staining negative
B. It is grown under 5 - 10% CO2 concentration
C. It is urease positive
D. It is non-H2S producer
E. Thayer Martin medium does not show its growth
Choose the correct answer from the options given below:
Brucella abortus Indian Biovar(s) has following characteristics:
A. It is modified Z N staining negative
B. It is grown under 5 - 10% CO2 concentration
C. It is urease positive
D. It is non-H2S producer
E. Thayer Martin medium does not show its growth
Choose the correct answer from the options given below:
A. It is modified Z N staining negative
B. It is grown under 5 - 10% CO2 concentration
C. It is urease positive
D. It is non-H2S producer
E. Thayer Martin medium does not show its growth
Choose the correct answer from the options given below:
Show Hint
Brucella abortus Diagnostics: Capnophilic ($5-10\%\text{ CO}_2$), Modified ZN (Stamp's) POSITIVE (Red coccobacilli), Rapidly UREASE POSITIVE.
Updated On: Sep 7, 2026
- A and D only
- A and E only
- B and C only
- D and E only
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Brucella phenotypic biotyping criteria include carbon dioxide requirement, hydrogen sulfide production, dye tolerance, and rapid urease activity.
Step 2: Detailed Explanation:
Physiological and biochemical characteristics of Brucella abortus (specifically Indian biovars, predominantly Biovar 1 and Biovar 3):
1. CO2 Requirement (B): Primary isolation of B. abortus is capnophilic, strictly requiring 5% to 10% $\text{CO_2$ concentration for growth.
2. Urease Activity (C): It is strongly Urease-positive (hydrolyzes Christensen's urea broth within minutes to hours).
3. Staining: It is obligately Modified Ziehl-Neelsen (Stamp's staining) positive (stains bright red against blue background due to partially acid-fast cell wall), ruling out A.
4. H2S Production: Indian biovars 1 and 3 are $\text{H}_2\text{S}$ positive.
Thus, characteristics B and C are correct.
Step 3: Final Answer:
Hence, the correct characteristics are B and C only, matching option (C).
Was this answer helpful?
0
0
Top ICAR AIEEA Veterinary Science Questions
- In ox vallate papillae are
- Spiral colon is characteristic of
- Assertion (A) : Stratum lucidum is translucent layer present between stratum spinosum and stratum granulosum
Reasoning (R) : Stratum lucidum is translucent due to presence of eledin protein.
In light of the above statements, choose the correct answer from the options given below. - Statement (I): Keratinocytes contain melanin pigment in the form of melanosomes.
Statement (II): Melanin pigment is produced by keratinocytes with the help of Tyrosinase enzyme.
In light of the above statements, choose the most appropriate answer from the options given below. - Which of the following is true for mast cells?
(A). These cells are common in loose connective tissue.
(B). These cells take metachromatic stain.
(C). These cells are rich in histamine, heparin and proteases.
(D). These cells contain basophilic cytoplasmic granules.
Choose the correct answer from the options given below:
View More Questions
Top ICAR AIEEA Veterinary Microbiology Questions
- Which of the following statements are true regarding brucellosis?
(A). Necrotic placentitis is frequently encountered
(B). Hygroma and joint inflammation occurs in chronic cases
(C). Humans can get infected through intact mucous membrane
(D). Abortions generally occurs in the first half of the gestation
Choose the correct answer from the options given below: - Button ulcers in colon of pigs are seen in
(A). Classical swine fever
(B). Toxoplasmosis
(C). Intestinal salmonellosis
(D). Glasser's disease
Choose the correct answer from the options given below: - Swollen, friable, dark red or black colored liver (bronze colored) is observed as a constant feature of which of the following disease of broilers?
- Given below are two statements:
Statement (I): Warts in cattle is caused by papilloma virus.
Statement (II): Ring worm in cattle is caused by Trichophyton spp.
In light of the above statements, choose the most appropriate answer from the options given below. - Vibrio cholerae is a Gram negative bacteria. Based on the name and the staining character of the bacterium, what is it's shape and colour when observed under microscope?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions