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TLS Online TPP Program

#Question id: 27501

Which of the following statements regarding the reducing ability of a sugar is wrong?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The aldehyde group of a saccharide is responsible for its reducing properties.

  2. Ketoses are not reducing sugars because they are not aldehydes.

  3. D-Glucose in predominantly in a cyclic hemiacetal form but it is a reducing sugar through the acyclic form with which the hemiacetal is in equilibrium.

  4. A methyl glucoside is not a reducing sugar.
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TLS Online TPP Program

#Question id: 18778

#Unit 13. Methods in Biology

which of the following technique provides an unusually powerful technology for the quantitative analysis and sorting of cell populations labelled with one or more fluorescent antibodies.
TLS Online TPP Program

#Question id: 1731

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of Sos (Son of sevenless)?
TLS Online TPP Program

#Question id: 1716

#Unit 4. Cell Communication and Cell Signaling

Expression of a CD8 α-α homodimer is characteristic of:
TLS Online TPP Program

#Question id: 1143

#Unit 4. Cell Communication and Cell Signaling

In trimeric G proteins, GTP binds to:
TLS Online TPP Program

#Question id: 33233

#Unit 1. Molecules and their Interaction Relevant to Biology

The pH dependence of the rate of the RNase A reaction suggests the involvement of 
a. Two ionizable residues with pK values of 5.4 and 6.4
b. Single ionizable residue with pK values 7
c. Cytosine residue in active site