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TLS Online TPP Program

#Question id: 10184

Which of the following statement is incorrect about plasmalogen?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Plasmalogens are glycerophospholipids in which the C1 substituent of the glycerol moiety is linked via an α, β-unsaturated ether linkage in the cis configuration.
  2. Plasmalogens are glycerophospholipids in which the C1 substituent of the glycerol moiety is linked via an α, β-unsaturated ester linkage in the cis configuration.
  3. Ethanolamine, choline, and serine form the most common plasmalogen head groups.
  4. Because the vinyl ether group is easily oxidized, plasmalogens may react with oxygen free radicals, by-products of normal metabolism, thereby preventing free-radical damage to other cell constituents.
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TLS Online TPP Program

#Question id: 1507

#Unit 4. Cell Communication and Cell Signaling

The genes responsible for cancer in RNA and DNA tumor viruses are:
TLS Online TPP Program

#Question id: 4706

#Unit 11. Evolution and Behavior

Which of the following statements best explains why modification or change in an organ or tissue during the lifetime of an individual is not inherited?
TLS Online TPP Program

#Question id: 6949

#Unit 5. Developmental Biology

During gastrulation in Xenopus, the future mesoderm and endoderm move inside the embryo through the "blastopore"; in contrast, in chickens, gastrulation involves cells moving inward through the:
TLS Online TPP Program

#Question id: 5539

#Unit 5. Developmental Biology

When does neurulation occur during human pregnancy?
TLS Online TPP Program

#Question id: 2641

#Unit 2. Cellular Organization

Which segments of the attenuator together form the repression loop?