ACT Science Practice Question #1510 (Medium (29)) | Test Citadel
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ACT Science Difficulty: Medium (29)

Digital ACT Science Practice Question #1510

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E. coli was cultured in nutrient broth at 37°C. Optical density at 600 nm was recorded: - 0 hr (Lag): OD = 0.05 - 2 hr (Log): OD = 0.22 - 4 hr (Log): OD = 0.88 - 6 hr (Stationary): OD = 1.45 - 8 hr (Stationary): OD = 1.46 Between hours 6 and 8, the bacterial population is in:
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Socratic AI Engine Step-by-Step Derivation
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Flat OD = stationary phase.

Masterclass Solution & Distractor Trap Analysis

OD remains constant at ~1.45-1.46 between hours 6 and 8, characteristic of the stationary phase....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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