Practice Questions

TLS Online TPP Program

#Question id: 346

The partial negative charge in a molecule of water occurs because ________.

#XL - S Microbiology

the oxygen atom donates an electron to each of the hydrogen atoms
the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus
the oxygen atom has two pairs of electrons in its valence shell that are not neutralized by hydrogen atoms
one of the hydrogen atoms donates an electron to the oxygen atom

More Questions

TLS Online TPP Program

#Question id: 1671

#XL - Q Biochemistry

A chromosome on which T-cell receptor α chain gene rearrangement has occurred lacks which of the following gene segments?

TLS Online TPP Program

#Question id: 1672

#XL - Q Biochemistry

Using only random VDJ recombination, from 40 V, 23 D, and 6 J gene segments, what are the number of possible variable regions of an antigen receptor molecule?

TLS Online TPP Program

#Question id: 1673

#XL - Q Biochemistry

N-region insertion is associated with the expression of:

TLS Online TPP Program

#Question id: 1674

#XL - Q Biochemistry

Which of the following statements is TRUE of receptor editing?

TLS Online TPP Program

#Question id: 1675

#XL - Q Biochemistry

Somatic hypermutation of V genes: