TLS Online TPP Program

#Question id: 5315


In humans, the embryonic and fetal forms of hemoglobin have a higher affinity for oxygen than that of adults. Why is this the case?

#Unit 11. Evolution and Behavior
  1. Nonidentical genes produce different versions of globins during development.

  2. Pseudogenes interfere with gene expression in adults.

  3. The attachment of methyl groups to cytosine following birth changes the type of hemoglobin produced.

  4. Histone proteins change shape during embryonic development.

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TLS Online TPP Program

#Question id: 26446

#Unit 3. Fundamental Processes

Which of the following is a universal marker for double strand breaks

TLS Online TPP Program

#Question id: 26445

#Unit 3. Fundamental Processes

In transcription-coupled repair (TC-NER) TFIIH, itself a large complex, which includes the products of two XP genes, XPB and XPD, which of the following is correctly representing the function of XPB and XPD

TLS Online TPP Program

#Question id: 26444

#Unit 3. Fundamental Processes

global genome repair (GG-NER) depending on proteins

TLS Online TPP Program

#Question id: 26443

#Unit 3. Fundamental Processes

XP-V is caused by a defect in the translesion DNA polymerase

TLS Online TPP Program

#Question id: 26441

#Unit 3. Fundamental Processes

NER component and their functions are given, match them correctly

 Component Function
 1. UvrA a. DNA Pol I and DNA ligase
 2. UvrB dimer b. creates two incisions
 3. UvrC c. melts the DNA to create a single-stranded bubble around the lesion 
 4. DNA Pol I and DNA ligase d. scanned Distortion

TLS Online TPP Program

#Question id: 26440

#Unit 3. Fundamental Processes

Choose the correct statement 
a. Long patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, and APE1 
b. Long patch repair system is accomplished by Lig3, FEN1, Pol ξ β ,APE1 & lyase action
c. Short patch repair system is accomplished by Lig3, FEN1, Pol  ξ β,APE1 & lyase action
d. Short patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, , and APE1