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TLS Online TPP Program

#Question id: 282

A HATS enzymes reacts with the side-chain of lysine to form the following structure: What effect will the HATS enzymes have on histones?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. No effect, since histones contain few lysine residues.

  2. HATS will increase the affinity of histones for DNA.

  3. HATS will allow for easier unravelling of histone-DNA structures.

  4. HATS activate histones for interaction with mRNA.

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TLS Online TPP Program

#Question id: 28403

#Unit 5. Developmental Biology

A cell that low concentration of nodal related protein and also have vegT and vg1 expression that type of cell undergo to the formation of which structure?
TLS Online TPP Program

#Question id: 29068

#Unit 10. Ecological Principles

A positive correlation between population density over time and individual fitness is known as___
TLS Online TPP Program

#Question id: 4071

#Unit 3. Fundamental Processes

The fact that a specific protein leaves a “footprint” on a DNA molecule is indicative of

a. a lack of interaction between the specific protein and DNA.

b. protection from DNAse by the specific protein.

c. binding of the specific protein to all types of DNA.

d. binding of the specific protein to a specific sequence of DNA.
TLS Online TPP Program

#Question id: 14997

#Unit 8. Inheritance Biology

You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?
TLS Online TPP Program

#Question id: 5232

#Unit 11. Evolution and Behavior

Using molecular clock, it was estimated that two species X and Y must have diverged from their common ancestor about 5 x 10^6 years ago. If the rate of divergence per base pair is estimated to be 0.06 per million years, what is the proportion of base pairs that differ between the two species now?