Life Sciences
2024 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 82–84 of 122. Imported answers require review unless explicitly marked reviewed.
Question 82
Open questionXL-SNAT2 marksNeeds review
At t = 0, the bacterial cell number is 10,000 cells/mL. At t = 480 minutes, the cell number increased to 320,000 cells/mL. The mean generation time during this exponential growth period, rounded off to the nearest integer is ______ minutes.
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Open questionXL-SNAT2 marksNeeds review
A landfill sample was analyzed by dilution and plate techniques for viable bacterial count. When one gram of the landfill sample was diluted 1 × 10⁻⁴ (w/v) it yielded 400 CFU. The viable bacterial count (in million, rounded off to the nearest integer) in one gram landfill sample 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 84
Open questionXL-SNAT2 marksNeeds review
A fluorescence microscope with an objective lens of numerical aperture (NA) 1.5 is used with light of wavelength (λ) 600 nanometers. The lateral resolution limit of this microscope rounded off to the nearest integer, is ________ nanometers.
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