Practice Questions

TLS Online TPP Program

#Question id: 565

A transition-state analog:

#XL - Q Biochemistry

is less stable when binding to an enzyme than the normal substrate.
resembles the active site of general acid-base enzymes.
resembles the transition-state structure of the normal enzyme-substrate complex.
stabilizes the transition state for the normal enzyme-substrate complex.

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TLS Online TPP Program

#Question id: 35783

#XL - U Food Technology

In Gram-positive bacteria, the thick peptidoglycan layer:

TLS Online TPP Program

#Question id: 35784

#XL - U Food Technology

Gram-negative bacteria appear pink after Gram staining because:

TLS Online TPP Program

#Question id: 35785

#XL - U Food Technology

Which of the following is the correct order of reagents used in Gram staining?

TLS Online TPP Program

#Question id: 35786

#XL - U Food Technology

Decolorization in Gram staining is done using:

TLS Online TPP Program

#Question id: 35787

#XL - U Food Technology

Which structural feature is absent in Gram-negative bacteria but present in Gram-positive bacteria?

TLS Online TPP Program

#Question id: 35788

#XL - U Food Technology

The main purpose of performing a serial dilution in microbiology is to: