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TLS Online TPP Program

#Question id: 8787

Which of the following statements is accurate, at least according to our present knowledge?

#Unit 9. Diversity of Life Forms
  1. Eukaryotes acquired nuclear genes only in the distant past; these genes can allow survival in anaerobic environments.
  2. Genes from prokaryotes have been acquired by some eukaryotes; these genes can allow survival in extreme environments.
  3. Prokaryotes acquired genes from eukaryotes many times; these genes can allow survival in extreme environments.

  4. Prokaryotes acquired genes from fungi; these genes can allow the digestion of cellulose.

     

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TLS Online TPP Program

#Question id: 18990

#Unit 13. Methods in Biology

A list of reporter or marker genes used in gene transfers in animal cells with reporter gene and their source match them correctly

I - Chloramphenicol acetyltransferase

(CAT)

A - Herpes simplex virus (HSY)

II - Luciferase (lux)

B - Pacific jellyfish (Aequoria

victoria)

III - Green fluorescent protein

(GFP)

C - Bacteria, firefly

IV - Thymidine kinase (Tk)

D - E. coli transposon Tn9



TLS Online TPP Program

#Question id: 156

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the N-terminal for the pentapeptide Val-Ile-Glu-Arg-Tyr?
TLS Online TPP Program

#Question id: 13189

#Unit 10. Ecological Principles

The relative abundance of C plant species increases with latitude because of the associated temperature gradient. A study in North America found that at  42°  North,  C3  plants  become more  abundant than  C4  plants. Given  an  increase in  mean global  temperatures by  10°C and no  other changes in  environmental conditions,  the latitude at which C3 plants become more abundant:
TLS Online TPP Program

#Question id: 181

#Unit 1. Molecules and their Interaction Relevant to Biology

Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:
TLS Online TPP Program

#Question id: 3425

#Unit 11. Evolution and Behavior

Many evolutionary forces are operating in population. In study, within population increase genetic variation due to -----A-----while decrease genetic variation due to ------B-----. Between populations increase genetic variation due to -----C-----while decrease genetic variation due to ------D-----.