Practice Questions

TLS Online TPP Program

#Question id: 34547

Which statements correctly describe porins in Gram-negative bacteria?

#XL - S Microbiology

They are non-specific channels for small hydrophilic solutes
They are located in the inner membrane
They contribute to selective permeability of the outer membrane
They allow diffusion of molecules larger than 600 Da without specificity

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TLS Online TPP Program

#Question id: 19661

#XL - P Chemistry

Which of the following substances has the highest melting point?

TLS Online TPP Program

#Question id: 12027

#XL - T Zoology

If you place a small piece of a cracker on your tongue, what would you expect to happen?

TLS Online TPP Program

#Question id: 20136

#XL - P Chemistry

Ka for CH3COOH at 25ºC is 1.754 × 10^–5. At 50ºC, Ka is 1.633 × 10^–5 What will be value of Δ Sº for the ionisation of CH3COOH?

TLS Online TPP Program

#Question id: 3468

#XL - T Zoology

Which of following is incorrect regards group selection?

TLS Online TPP Program

#Question id: 1096

#XL - Q Biochemistry

Which of the following processes generally requires protein phosphorylation?