TLS Online TPP Program

#Question id: 1432


Which of the following proteins involved in angiogenesis is paired correctly with its function?

#Unit 4. Cell Communication and Cell Signaling
  1. HIF – tyrosine kinase

  2. VEGF – receives a secreted signal to induce blood vessel growth

  3. oxygen sensor – transcription factor

  4. VEGF receptor – tyrosine kinase

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TLS Online TPP Program

#Question id: 12346

#Unit 10. Ecological Principles

The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?


TLS Online TPP Program

#Question id: 5523

#Unit 5. Developmental Biology

Ectodermal cells condense into placodes that change into

TLS Online TPP Program

#Question id: 13188

#Unit 10. Ecological Principles

The following figure is a model of seedling establishment as a function of distance from a parent tree. Initial seed density measures the number of seeds falling to the ground. Seed survivorship measures the proportion of seeds that survive to the adult stage at each distance


Which of the following factors is most likely to generate the seed survivorship curve shown? 

TLS Online TPP Program

#Question id: 12395

#Unit 6. System Physiology – Plant

In theory, auxin could increase the rate of proton extrusion by two possible mechanisms:
I) H+-ATPase activation
II) H+-ATPase synthesis
a) Auxin involves in the activation of ATP-driven proton-pump (H+-ATPase) indirectly
b) ABPs appear to be able to activate the plasma membrane H+-ATPase in the presence of auxin
c) Activity of the H+- ATPase is repressed by the C-terminal domain of the enzyme, which can block the catalytic site  in absence of auxin
d) The protein is synthesized on the rough endoplasmic reticulum and targeted via the secretory pathway to the plasma membrane
Find out the correct explanation of given mechanisms.

TLS Online TPP Program

#Question id: 8947

#Unit 9. Diversity of Life Forms

Organisms that are neither coelomate nor pseudocoelomate should, apart from their digestive systems, have bodies that