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TLS Online TPP Program

#Question id: 19693

The U wave is an inconstant finding that:

#Unit 13. Methods in Biology
  1. septal and left ventricular depolarization
  2. late depolarization of the ventricular walls moving back toward the AV junction.
  3. left to right septal depolarization
  4. due to ventricular myocytes with long action potentials
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TLS Online TPP Program

#Question id: 34110

#Unit 2. Cellular Organization

A. DNA is wrapped 1.67 times around the histone octamer.
B. The structure of the DNA is altered so that it has an increased number of base pairs/turn in the middle, but a decreased number at the ends.
C. 0.6 negative turns of DNA are absorbed by the change in bp/turn from 10.5 in solution 
D. 10.2 bp/turn on the nucleosomal surface is linking-number paradox.

Find true and false
TLS Online TPP Program

#Question id: 8699

#Unit 9. Diversity of Life Forms

Use the figure to answer the following question.

If the figure is an accurate depiction of relatedness, then which of the following should be an accurate statement?
TLS Online TPP Program

#Question id: 4874

#Unit 8. Inheritance Biology

In Drosophila melanogaster, black body (b) is recessive to gray body (B), purple eyes (pr) are recessive to red eyes (PR), and vestigial wings (vg) are recessive to normal wings (VG). The loci coding for these traits are linked, with the following map distances

 The interference among these genes is 0.5. Pure line breeding cross Gray body, Red eye, normal wings with black body, purple eye, vestigial wings. If heterozygous female for all loci were allowed test cross, the of progeny with gray body, purple eye and vestigial  wings out of 1400?
TLS Online TPP Program

#Question id: 11494

#Unit 2. Cellular Organization

How do aquaporins allow the passage of H2O but not H3O+?
TLS Online TPP Program

#Question id: 4022

#Unit 3. Fundamental Processes

You are studying the effects of α-amanitin, a poisonous cyclic octapeptide, on eukaryotic cells and have noticed that following treatment, there is no miRNA transcription. Based on this evidence you conclude that α-amanitin must be inhibiting: