Practice Questions

TLS Online TPP Program

#Question id: 8699

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?

#Unit 9. Diversity of Life Forms

If all species depicted here make up a taxon, this taxon is monophyletic.
The species present at position 4 is ancestral to species E, but not species D.
Species C is more closely related to species B than D is to B
The species present at position 3 is ancestral to C, D, and E.

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TLS Online TPP Program

#Question id: 28493

#Unit 5. Developmental Biology

Zone of polarizing activity (ZPA) involves in which patterns of cell fates?

TLS Online TPP Program

#Question id: 12903

#Unit 13. Methods in Biology

A gene isolation system that uses adapted vectors termed as_______

TLS Online TPP Program

#Question id: 28527

#Unit 5. Developmental Biology

Which of the following gene encodes an acetyl-CoA carboxylase which crucial for proper patterning of the apical portion of the embryo?

TLS Online TPP Program

#Question id: 15366

#Unit 4. Cell Communication and Cell Signaling

For pro-proliferation signaling pathways to cause uncontrolled proliferation, as is seen in cancer, this p53 up-regulation must not occur, It is therefore not surprising that p53 is inactive in most human tumors through loss of p53 function itself, down-regulation of positive regulators (PR) of p53 or up-regulation of negative regulators (NR) of p53, these regulators are accordingly

TLS Online TPP Program

#Question id: 12232

#Unit 10. Ecological Principles

White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?