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TLS Online TPP Program

#Question id: 3846

A heat-sensitive DNA ligase (25°C permissive, 37°C nonpermissive) has been used to show that DNA synthesis is discontinuous. Examination of DNA replication in the presence of [3H]-thymidine in the mutant would demonstrate which of following?

#Unit 3. Fundamental Processes

  1. The accumulation of short segments of unlabeled DNA at 25°C and at 37°C

  2. The accumulation of short segments of unlabeled DNA at 25°C but not at 37°C

  3. The accumulation of short segments of radioactive DNA at 25°C but not at 37°C

  4. The accumulation of short segments of radioactive DNA at 37°C but not at 25°C

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TLS Online TPP Program

#Question id: 952

#Unit 1. Molecules and their Interaction Relevant to Biology

If an amino acid is glucogenic, it will not be degraded to ________.
TLS Online TPP Program

#Question id: 953

#Unit 1. Molecules and their Interaction Relevant to Biology

 The degradation of arginine, histidine and proline all lead to the product ________.
TLS Online TPP Program

#Question id: 954

#Unit 1. Molecules and their Interaction Relevant to Biology

The degradation of which amino acid requires the coenzyme tetrahydrofolate?
TLS Online TPP Program

#Question id: 955

#Unit 1. Molecules and their Interaction Relevant to Biology

In amino acid catabolism the α-amino groups are initially released as ________.
TLS Online TPP Program

#Question id: 956

#Unit 1. Molecules and their Interaction Relevant to Biology

What type of reaction is shown below?  Amino acid + α-Ketoglutarate⇋ α-Keto acid + Glutamate
TLS Online TPP Program

#Question id: 957

#Unit 1. Molecules and their Interaction Relevant to Biology

Which is not produced from the degradation of branched-chain amino acids?