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TLS Online TPP Program

#Question id: 28283

Following statements are related to fast block to polyspermy, which statement is incorrect?

#Unit 5. Developmental Biology
  1. by changing the electric potential to a more positive level additional sperm binding is prevented 
  2. chemicals from the fusing sperm cytoplasm alter the sodium ion channels on the membrane
  3. after the binding of the first sperm, the membrane potential shifts from -20mV to about +70 mV
  4. Occur within 1–3 seconds
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TLS Online TPP Program

#Question id: 24231

#Unit 4. Cell Communication and Cell Signaling

Match the following classes of classical cadherins with their functions.
 
a. E-cadherin      1.present on many types of epithelial cells
b. N-cadherin      2.present on nerve, muscle and lens cells
c. P-cadherin       3.present on cells in the placenta & epidermis
TLS Online TPP Program

#Question id: 4984

#Unit 11. Evolution and Behavior

A hypothetical mutation in a squirrel population produces organisms with eight legs rather than four. Further, these mutant squirrels survive, successfully invade new habitats, and eventually give rise to a new species. The initial event, giving rise to extra legs, would be a good example of
TLS Online TPP Program

#Question id: 11570

#Unit 7. System Physiology – Animal

What would be a likely outcome of a person not consuming enough iodine in their diet?
TLS Online TPP Program

#Question id: 16324

#Unit 7. System Physiology – Animal

Symptoms of Severe Anxiety:
TLS Online TPP Program

#Question id: 387

#Unit 1. Molecules and their Interaction Relevant to Biology

For a weak acid with a pKa of 6.0, What would be the ratio of acid to salt at pH 5.