GATE-ES SERIES Environmental-microbiology
Pathogens
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
1
2024 1
2023 1
2022 Chapter Questions 3 MCQs
01
PYQ 2022
medium
environmental-microbiology ID: gate-es-
A microbial culture with a specific growth rate of (per hour) is being grown in a continuous reactor at steady state with hydraulic retention time (HRT) of 24 hours. The reactor is subjected to a perturbation by reducing the HRT to 12 hours. The reactor recovers and comes to a new steady state with a specific growth rate of . Which one of the following statements is correct?
1
2
3
4
02
PYQ 2023
medium
environmental-microbiology ID: gate-es-
Kit Performance in an Outbreak
A researcher compiled the following information about the performance of a kit in an outbreak:
| Infection State | Kit Response |
|---|---|
| Disease (probability = 0.002) | Positive response (probability = 0.98) |
| No Disease | Positive response (probability = 0.03) |
The probability of detecting an infection for a positive result through the kit would be ______________________ (rounded off to three decimal places).
03
PYQ 2024
medium
environmental-microbiology ID: gate-es-
Tuberculosis is predominantly caused by ________.
1
Entamoeba histolytica
2
Salmonella typhi
3
Mycobacterium bovis
4
bacillus cereus