8. Mary, while examining whether a boiled egg
sinks or floats, found that it floats. But Vakula
made it sink. How is it possible?
Guess and write it.
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Answers
Answer:
AMP-PNP is the abbreviation for a structural analogue of ATP in which the second and third phosphate groups are linked by an NH group (instead of an oxygen atom). AMP- PNP can bind to the ATP-binding site of most ATPases. It differs from ATP in that the terminal phosphate cannot be removed by hydrolysis (so you cannot create ADP, therefore, you cannot get energy from AMP-PNP). Based on this information, explain the following
a. When isolated myofibrils are placed in a flask containing Ca2+ and AMP-PNP, contraction is quickly arrested. Where in the contraction cycle will contraction stop? Be specific.
b. What affects would you predict for cilia on a paramecium to which AMP-PNP is added? Be specific as to the proteins / molecules whose function would be inhibited and what would be the overall affect?
Answer:
Mary, while examining whether a boiled egg sinks or floats, found that it floats but Vakula made it sink, How is it possible? ..
Answer: The boiled egg normally has more density than water and thereby it sinks. But if salt is added to the water then it becomes denser and in that cases the egg floats in the water.
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