CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Multicellular organism growth.
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Repair of damaged cells.
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Replacement of dying cells.
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All of these are true.
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Detailed explanation-1: -Cells must replicate their DNA before they can divide. This ensures that each daughter cell gets a copy of the genome, and therefore, successful inheritance of genetic traits. DNA replication is an essential process and the basic mechanism is conserved in all organisms.
Detailed explanation-2: -Before a cell divides, it must first copy (or replicate) its entire genome so that each resulting daughter cell ends up with its own complete genome.
Detailed explanation-3: -The correct answer is (D) RNA primase makes the RNA primer, while DNA Pol epsilon extends that primer with DNA. DNA polymerase epsilon is the enzyme that synthesizes new strands of DNA during replication.
Detailed explanation-4: -DNA replication occurs in all living organisms acting as the most essential part for biological inheritance. This is essential for cell division during growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA.