1. Why is cleavage furrow a contractile ring of actin microfilamrnts that eventu

Question

1. Why is cleavage furrow a contractile ring of actin microfilamrnts that eventually results in the division of the cytoplasm ?
2. Why lysosome digests other worn out organelles and foreign substances that have entered the cell ?
3.why late prphase stage signifiies the breakdown of the nuclear envelop?
4. Why the division of human cell consists of a series of events, collectively called mitosis nuclear division and cytokinesis or division of cytoplasm? 1. Why is cleavage furrow a contractile ring of actin microfilamrnts that eventually results in the division of the cytoplasm ?
2. Why lysosome digests other worn out organelles and foreign substances that have entered the cell ?
3.why late prphase stage signifiies the breakdown of the nuclear envelop?
4. Why the division of human cell consists of a series of events, collectively called mitosis nuclear division and cytokinesis or division of cytoplasm?
2. Why lysosome digests other worn out organelles and foreign substances that have entered the cell ?
3.why late prphase stage signifiies the breakdown of the nuclear envelop?
4. Why the division of human cell consists of a series of events, collectively called mitosis nuclear division and cytokinesis or division of cytoplasm?

Explanation / Answer

Ans1. The

Ans 2. The lysozyme contains various digestive enzymes like acid hydrolases that eat out out the worn out organelles and foreign substances that have entered the cell in order to remove waste material from cell and protects it from the intoxication of unwanted materials.

Ans 3.. It happens because this is premetaphse stage when the daughter cell will move towards their pole to undergo division. The breakdown of nuclear envelope provide a better surface for cell to divide.

Ans 4.The numan chromosomes are condensed inside the nucleus, which needs to be loosen, open up and then undergo division followed by agains consensation and to be packed in nuclear envelope. This is a complex and tightly regulated process in order to avoid any anamoly. This is why cell division is a series of events coordinated and regulated at every step.

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