#Question id: 23475
#General Aptitude
#Question id: 5671
#Unit 5. Developmental Biology
Match the following mechanism of polyspermy (Column I) with events (Column II).
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Column I |
Column II |
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A. Fast block to polyspermy |
i. chemicals from the fusing sperm cytoplasm alter the sodium ion (Na+) channels on the membrane |
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B. Slow block to polyspermy |
ii. enzyme cortical granule serine protease, cleaves the protein posts that connect the vitelline envelope |
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iii the concentration of free Ca2+ in the egg cytoplasm increases |
|
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iv. an electric change in the egg cell membrane |
|
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v. the concentration of free Na+ in the egg cytoplasm increases |
Which of the following is correct?
#Question id: 5466
#Unit 8. Inheritance Biology
Researcher studies of discontinuous and continuous character, the following conclusion were made
a. Discontinuous characteristics exhibit few distinct phenotypes
b- Continuous characteristics exhibit a wide range of phenotypes
c .Continuous characteristics are frequently produced by effects of many genes
d. Continuous characteristics are frequently produced by effects of environment
Which of above conclusion is correct?
#Question id: 1419
#Unit 4. Cell Communication and Cell Signaling
Mitochondrial permeabilization can be induced by compounds that poke small holes in the outer membrane. This would cause:
#Question id: 14696
#Unit 13. Methods in Biology