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TLS Online TPP Program

#Question id: 7157

When the blastema forms after amputation of a newt limb, what processes must the cells undergo in order for regeneration to occur?

#Unit 5. Developmental Biology
  1. The cells must only begin to divide for regeneration to occur.
  2. The cells must simply dedifferentiate in order for regeneration to occur.
  3. Some cells in the blastema will transdifferentiate after amputation, and this allows regeneration to proceed.
  4. Dedifferentiation, cell division, transdifferentiation, and formation of an AER-like function are all involved.
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TLS Online TPP Program

#Question id: 690

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds?
TLS Online TPP Program

#Question id: 21951

#Unit 2. Cellular Organization

Eukaryotic chromosome normally visualised in 
TLS Online TPP Program

#Question id: 27559

#Unit 1. Molecules and their Interaction Relevant to Biology

Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is
TLS Online TPP Program

#Question id: 11735

#Unit 6. System Physiology – Plant

In cytokinin biosynthesis is the addition of the isopentenyl side chain from DMAPP to an adenosine moiety. The plant and bacterial IPT enzymes differ substrate used;

a) the bacterial enzyme utilizes AMP

b) the plant enzyme appears to utilize AMP

c) the bacterial enzyme utilizes both ADP and ATP

d) the plant enzyme appears to utilize both ADP and ATP
TLS Online TPP Program

#Question id: 10586

#Unit 10. Ecological Principles

Which of the following factors may not change carrying capacity over time?