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TLS Online TPP Program

#Question id: 146

The pH inside cells is normally near pH 7. At pH 7 which statement is true about the charges (ionization state) of the α-Carboxyl and α-Amino groups of an amino acid?

#Section 2: General Biology

  1. The α-Carboxyl group is 1- and the α-Amino group is 1+.

  2. The α-Carboxyl group is 1+ and the α-Amino group is 1-.

  3. The α-Carboxyl group is 1- and the α-Amino group is uncharged.

  4. Both groups are uncharged (not ionized) at pH 7.

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TLS Online TPP Program

#Question id: 1989

#Section 2: General Biology

Which of the following are T cells of the immune system?
TLS Online TPP Program

#Question id: 1990

#Section 2: General Biology

B cells interacting with helper T cells are stimulated to differentiate when
TLS Online TPP Program

#Question id: 1991

#Section 2: General Biology

Why can normal immune responses be described as polyclonal?
TLS Online TPP Program

#Question id: 1992

#Section 2: General Biology

How do antibodies of the different classes IgM, IgG, IgA, IgD, and IgE differ from each other ?
TLS Online TPP Program

#Question id: 1993

#Section 2: General Biology

When antibodies attack antigens, clumping of the affected cells generally occurs. This is best explained by
TLS Online TPP Program

#Question id: 1995

#Section 2: General Biology

What is the primary function of humoral immunity?