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TLS Online TPP Program

#Question id: 1993

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

#Section 2: General Biology

  1. the shape of the antibody with at least two binding regions.

  2. disulfide bridges between the antigens.

  3. complement that makes the affected cells sticky.

  4. bonds between class I and class II MHC molecules.

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TLS Online TPP Program

#Question id: 13029

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Mutation at Vir E and Vir B can repectively cause :
TLS Online TPP Program

#Question id: 3739

#Section 3: Genetics, Cellular and Molecular Biology

In packaging the eukaryotic DNA into nucleosomes, it is thought that the requirement for ________ and their synthesis is a cause of the slower rate of movement of the replication fork.
TLS Online TPP Program

#Question id: 161

#Section 2: General Biology

Two amino acids of the standard 20 contain sulfur atoms.  They are:
TLS Online TPP Program

#Question id: 14328

#Section 5: Bioprocess Engineering and Process Biotechnology

In a sewage-treatment plant, a large concrete tank initially contains 440 000 litres liquid and 10 000 kg fine suspended solids. To flush this material out of the tank, water is pumped into the vessel at a rate of 40 000 litres h- 1. Liquid containing solids leaves at the same rate. Estimate the concentration of suspended solids in the tank at the end of 5 h._______________________.
TLS Online TPP Program

#Question id: 1911

#Section 2: General Biology

Which of the following does NOT minimize allogeneic graft rejection?