A microbial population declines from 1×10⁸CFU/mL to 1×10⁴CFU/mL in 30 minutes during thermal processing. Assuming first-order death kinetics, calculate the decimal reduction time (D-value) in minutes.

(Use: 𝑁=𝑁₀×10^{−𝑡 / 𝐷})

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#Question id: 3912

#XL - Q Biochemistry

Which of the following are incorrect matches for the given genes?

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#Question id: 3913

#XL - Q Biochemistry

The sigma-70 subunit

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#Question id: 3914

#XL - Q Biochemistry

A consensus sequence

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#Question id: 3915

#XL - Q Biochemistry

Which of the following is true for the unwinding of the DNA helix and the synthesis of a short stretch of RNA?

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#Question id: 3916

#XL - Q Biochemistry

Transcription termination

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#Question id: 3917

#XL - Q Biochemistry

For an RNA hairpin loop to form, the transcribed region of the DNA sequence must __.