Streptococci and Enterococci is part of the Bacteriology section of Microbiology. Practise 62 exam-style MCQs for NEET PG, FMGE, INI-CET and NEET SS, each with the correct answer and a detailed explanation.
Streptococci and Enterococci MCQs test handwashing against MRSA spread, vancomycin and mupirocin roles, VISA and VRSA resistance, capsule demonstration by Indian ink and the Quellung reaction — high-yield NEET PG revision.
Sample Streptococci and Enterococci MCQs with answers
Sample MCQ #1
Bence Jones protein are composed of:
Aμ Chains
Bg Chains
CKappa and Lambda chains
DFibrin split products
Show Answer & Explanation ▾
✓ Correct Answer: C. Kappa and Lambda chains
Bence-Jones proteins: Multiple myeloma light chain immunoglobulin - kappa or lambda. Identified in urine by coagulation when heated to 50°C but redissolving at 70° In single patient - kappa/lambda, never both Reference: Ananthanarayan and Paniker's Textbook of Microbiology 12th edition Chapter 13, Pg 201
Sample MCQ #2
Most effective method to prevent transmission of MRSA in a ward is?
AFumigation
BCleaning surfaces with chlorhexidine
CHand washing
DUse of rifampicin in prophylaxis
Show Answer & Explanation ▾
✓ Correct Answer: C. Hand washing
Single most effective method of prevention of hospital acquired infections is handwashing. DOC in the treatment of MRSA is vancomycin. Nasal carriers are treated with mupirocin. Reference: Essentials of medical microbiology by Apurba sastry 1 st edition Pg no.218
Sample MCQ #3
Treatment for nasal carriers of MRSA is by
AChlorhexidine
BRifampicin
CMupirocin 2%
DEthyl alcohol
Show Answer & Explanation ▾
✓ Correct Answer: C. Mupirocin 2%
Single most effective method of prevention of hospital acquired infections is handwashing. DOC in the treatment of MRSA is vancomycin. Nasal carriers are treated with mupirocin. Reference: Essentials of medical microbiology by Apurba sastry 1 st edition Pg no.218
Sample MCQ #4
VRSA and VISA are respectively due to:
AvanA gene and cell wall thickness
BBoth due to vanA gene
CBoth due to cell wall thickness
DvanA gene and there is no term like VISA
Show Answer & Explanation ▾
✓ Correct Answer: A. vanA gene and cell wall thickness
Erroneous and overuse of vancomycin has led to the emergence of resistance to vancomycin. It may be of low-grade resistance, known as VISA (vancomycin intermediate S. aureus) or high-grade resistance, known as VRSA (vancomycin-resistant S. aureus). VRSA is mediated by van A gene; whereas VISA is due to increase in cell wall thickness of S. aureus. The van A gene is believed to be acquired from a vancomycin-resistant strain of Enterococcus faecalis by horizontal conjugal transfer Treatment of VRSA should be based on an antimicrobial susceptibility report. Linezolid, telavancin, daptomycin and quinupristin/dalfopristin are the effective drugs. Reference: Essentials of Medical Microbiology, by Apurba Sastry and Sandhya Bhat, 3rd edition, page no: 518
Sample MCQ #5
Which of the following is positive by Indian ink staining?
APneumococcus
BStaphylococcus
CGonococcus
DEnterococcus
Show Answer & Explanation ▾
✓ Correct Answer: A. Pneumococcus
Negative staining: The background stains black whereas unstained bacteria stand out in contrast. It is used for the demonstration of capsules which do not take up simple stains. Example: India ink or nigrosine Capsulated bacteria: Pneumococcus (Streptococcus pneumoniae), Meningococcus (Neisseriae meningitidis), Klebsiella pneumoniae Capulated fungus yeast: Cryptococcus neoformans Reference: Ananthanarayan and Paniker's Textbook of Microbiology 12th edition, Pg 12
Sample MCQ #6
Quellung reaction is associated with:
ACapsular degeneration
BCapsular delineation
CCapsular absence
DLecithinase production
Show Answer & Explanation ▾
✓ Correct Answer: B. Capsular delineation
Capsule swelling (delineation) or Quellung reaction : It was described by Neufeld (1902) It was widely employed for the typing of pneumococci in the pre-sulphonamide days when lobar pneumonia used to be treated with specific anticapsular sera. Swollen, refractile and delineated capsules are seen on adding antisera mixed with methylene blue. Reference: Ananthanarayan and Paniker's Textbook of Microbiology 12th edition, Pg 20
What you can practise in Streptococci and Enterococci
62 Streptococci and Enterococci MCQs on Streptococci, Enterococci, Bacteriology — each with detailed explanations
Previous-year question practice across NEET PG, FMGE, INI-CET and NEET SS
Progress and performance tracking to measure retention
Streptococci and Enterococci MCQs test handwashing against MRSA spread, vancomycin and mupirocin roles, VISA and VRSA resistance, capsule demonstration by Indian ink and the Quellung reaction — high-yield NEET PG revision.
How many Streptococci and Enterococci questions are there, and which exams do they cover?
MedLadder includes 62 curated MCQs for Streptococci and Enterococci under Microbiology (Bacteriology), covering NEET PG, FMGE, INI-CET and NEET SS preparation.
