TLS Online TPP Program

#Question id: 14710


Splitting of one cellular sheet into two more or less parallel sheets. While on a cellular basis it resembles ingression, the result is the formation of a new (additional) epithelial sheet of cells, choose right gastrulation movement;

#Unit 5. Developmental Biology
  1. Delamination
  2. Ingression
  3. Epiboly
  4. Invagination
More Questions
TLS Online TPP Program

#Question id: 31231

#Unit 2. Cellular Organization

Mitotic spindle attach to chromosomes via specialized protein structures known as:

TLS Online TPP Program

#Question id: 26891

#Unit 10. Ecological Principles

 A researcher working on island biogeography mapped how isolation-controlled immigration (I), and area-controlled extinction (E), will act on number of species present on the islands. He forgot to label the size of the islands (small or large) and the location of the islands (near or far) on the graph.
Using information from MacArthur and Wilson's equilibrium theory, select the option that correctly identifies A, B, C and D in the figure above. 



TLS Online TPP Program

#Question id: 10782

#Unit 6. System Physiology – Plant

Which one of the following are not shown the characteristics of Saponins_____

TLS Online TPP Program

#Question id: 19092

#Unit 6. System Physiology – Plant

A toxin or effector molecules activate the membrane bound ATPases and cause the changing in membrane potential can be measured by using__

TLS Online TPP Program

#Question id: 12097

#Unit 10. Ecological Principles

The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.


Which of the following methods would be best to determine whether the phenotypic variation in Achillea lanulosa is due to genotypic variation?