Practice Questions

TLS Online TPP Program

#Question id: 150

How do the pKa values of an ionizable side chain compare when the amino acid is free versus when it is in a polypeptide chain?

#XL - T Zoology

The pKa of the side chain is independent of whether the amino acid is in a polypeptide chain or is free.
The pKa of the side chain is always lower for the free amino acid.
The pKa of the side chain may be lower or higher in a polypeptide chain due to weaker inductive effects and differences in their microenvironments.
The pKa of the side chain is usually higher in a polypeptide chain due to stabilization from nearby residues in the three-dimensional structure.

More Questions

TLS Online TPP Program

#Question id: 2102

#XL - S Microbiology

In which of the following environments would there be the greatest need for osmoregulation?

TLS Online TPP Program

#Question id: 11558

#XL - T Zoology

Analysis of a blood sample from a fasting individual who had not eaten for 24 hours would be expected to reveal high levels of ________.

TLS Online TPP Program

#Question id: 570

#XL - Q Biochemistry

Which of the following is true for allosteric enzymes

TLS Online TPP Program

#Question id: 19681

#XL - P Chemistry

By reacting with which of the following, primary amines can be separated from secondary and tertiary amines?

TLS Online TPP Program

#Question id: 3456

#XL - T Zoology

Which scientist suggested that human social behavior may have a genetic basis?