Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 594
TLS Online TPP Program

#Question id: 612

 The quaternary structure of hemoglobin changes from the T state to the R state ________.

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. when at least one subunit on each dimeric unit (αβ dimer) is oxygenated

  2. only after four molecules of O2 are bound

  3. after the binding of one molecule of O2 causes a change in the primary structure

  4. when hemoglobin is completely deoxygenated

More Questions
TLS Online TPP Program

#Question id: 15821

#Unit 8. Inheritance Biology

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.          
Assume that the trait is autosomal recessive with 80% penetrance. What is the probability that Ben and Jane’s first child will be affected?
TLS Online TPP Program

#Question id: 12506

#Unit 8. Inheritance Biology

Using the linked markers III 3 can be told that:
TLS Online TPP Program

#Question id: 4088

#Unit 3. Fundamental Processes

The 28S, 18S, and 5.8S rRNAs are

a. transcribed by RNA polymerase II.

b. encoded by a single transcription unit.

c. arranged in tandem arrays. 

d. processed in the cytoplasm.
TLS Online TPP Program

#Question id: 15227

#Unit 13. Methods in Biology

Electrophoresis of RNA is usually carried out in
TLS Online TPP Program

#Question id: 7571

#General Aptitude

A train overtakes two persons walking along a railway track. The first person walks at 4.5 km/hr and the other walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?