Life Sciences
GATE XL concept:growth PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:growth
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–4 of 4. Imported answers require independent review unless marked reviewed.
Question 106
Open questionXL-UMCQ1 markNeeds review
The lowest water activity (a_w) supporting the growth of Staphylococcus aureus in food under aerobic condition is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionXL-UMCQ1 markNeeds review
In a typical bacterial growth curve, the first order kinetics for growth rate is observed in
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 19
Open questionXL-UNAT2 marksNeeds review
A microbial sample taken at 10 AM contained 1x10⁵ CFU/mL. The count reached to 1x10¹⁰ CFU/mL at 8 PM of the same day. The growth rate (h⁻¹) of the microorganism would be ______.(up to two decimal points)
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 109
Open questionXL-UNAT2 marksNeeds review
A pure strain with generation time of 60 min is used in a fermentation process. Following inoculation (0 h), the strain takes 2 h for adaptation, 10 h to achieve maximum growth and 12 h to arrive at the point where the death rate is higher than the growth rate. If the inoculation load is 100 cells, the total population at the end of 10 h will be _________.
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