Practice Questions

TLS Online TPP Program

#Question id: 28286

Which of the following statement is correct about mechanical block to polyspermy?

#Unit 5. Developmental Biology

it involve chemicals from the fusing sperm cytoplasm alter the sodium ion channels on the membrane
it become active within 1–3 seconds after the binding of the first sperm
Sperm cannot fuse with egg cell membranes that have a positive resting potential
It becomes active about minute after the first successful sperm-egg fusion

More Questions

TLS Online TPP Program

#Question id: 28249

#Unit 5. Developmental Biology

Acrosome is derived at the time of maturation from which organelles?

TLS Online TPP Program

#Question id: 19715

#Unit 3. Fundamental Processes

Which of the following sequences are extended during the telomeric replication

TLS Online TPP Program

#Question id: 17199

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Question id: 12881

#General Aptitude

If the height of a cylinder is increased by 15 per cent and the radius of its base is decreased by 10 per cent then by what percent will its curved surface area change?

TLS Online TPP Program

#Question id: 11992

#Unit 10. Ecological Principles

Which of the following abiotic factors has the greatest influence on the metabolic rates of plants and animals?