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TLS Online TPP Program

#Question id: 676

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Helix formation would be favored at low pH.

  2. Helix formation would be favored at high pH.

  3. Helix formation would never occur regardless of pH.

  4. Helix formation would be favored at neutral pH.

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TLS Online TPP Program

#Question id: 16141

#Unit 4. Cell Communication and Cell Signaling

Indicate to which branch of the immune system the following statements apply, using H for the humoral branch and CM for the cell-mediated branch. Which cells involve in both response?
TLS Online TPP Program

#Question id: 22976

#Unit 7. System Physiology – Animal

In bone, 1,25-dihydroxycholecalciferol acts synergistically with PTH to stimulate 
TLS Online TPP Program

#Question id: 23674

#Unit 13. Methods in Biology

Why is Taq polymerase used in PCR rather than DNA polymerases from other sources?
TLS Online TPP Program

#Question id: 12179

#Unit 2. Cellular Organization

Match the following human ABC proteins (Column I) with their function (Column II)

Which of the following is correct?
TLS Online TPP Program

#Question id: 5720

#Unit 8. Inheritance Biology

Which two of the following are the CORRECT statements ?

P. Nondisjunction in the parental meiosis is not essential to produce diploid organisms

Q. Nondisjunction in the parental meiosis is essential to produce aneuploid organisms

R. Nondisjunction in the parental meiosis is essential to produce hexaploid organism

S. Nondisjunction in the parental meiosis is essential to produce tetraploid organisms