#Question id: 11092
#Unit 7. System Physiology – Animal
Which statement is the most accurate definition of external respiration?
#Question id: 31327
#Unit 13. Methods in Biology
#Question id: 5663
#Unit 5. Developmental Biology
Following statements are related to slow block to polyspermy in mammals.
A. A First slow block to polyspermy comes When the cortical granules fuse with the egg cell membrane, they release protein-digesting enzymes which is called as ovastacin that modify the zona pellucida proteins.
B. A second slow block to polyspermy comes from the so-called zinc spark, the release of billions of zinc ions that is induced by the entry of the first sperm, these released zinc ions are seen to bind to the egg cell membrane form a “zinc shield” that prevents further sperm entry.
C. A third slow block to polyspermy occurs at the level of the egg cell membrane and involves Juno.
Which of the following is incorrect?
#Question id: 2719
#Unit 2. Cellular Organization
The distinct zig-zag appearance of the chromatin fibre is due to ____________
#Question id: 29512
#Unit 6. System Physiology – Plant
Which of the following is a major glucosinolate of black mustard seeds and horseradish roots