#Question id: 5679
#Unit 5. Developmental Biology
Following statements regarding to the molecular processes of capacitation.
A. The sperm cell membrane is altered by the removal of albumin by cholesterol in the female reproductive tract.
B. Particular proteins or carbohydrates on the sperm surface are lost during decapacitation.
C. The membrane potential of the sperm cell becomes more positive as potassium ions leave the sperm. This change in membrane potential may allow calcium channels to be opened and permit calcium to enter the sperm.
D. Calcium and bicarbonate ions are critical in activating cAMP production and in facilitating the membrane fusion events of the acrosome reaction.
E. As a result of cAMP formation, protein phosphorylation occurs. Once they are phosphorylated, some proteins migrate to the surface of the sperm head. One of these proteins is izumo, which is critical in sperm-egg fusion.
which one of the following combinations is correct?
#Question id: 1105
#Unit 4. Cell Communication and Cell Signaling
Which of the following is a correct association?
#Question id: 14997
#Unit 8. Inheritance Biology
#Question id: 9277
#Unit 6. System Physiology – Plant
The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called
#Question id: 3538
#Unit 8. Inheritance Biology
Monohybrid cross allowed between heterozygous Rr (Round) and RR (Round), all progeny having Round seeded plant were allowed to self-fertilize to produce numerous progeny that are