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DNA replication begins when the two sides of the DNA molecule unwind and seperate, like a zipper unzipping.

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โˆ™ 2010-09-22 23:38:25
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Q: Why must the DNA in a cell replicate before the cell divides?
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What must a cell do before a cell divides?

the DNA must be replicated before the cell divides


Why does a cell need to replicate its DNA?

Before a cell can reproduce, it must first replicate, or make a copy of, its DNA.This is so that when it divides, each of the daughter cells will receive a copy of the DNA.


What happens before a cell divides?

Before a cell divides, strands of DNA in the nucleus must be copied.


Why must the chromosomes replicate before cell division?

Chromosomes must replicate so that both cells that are formed from cell division can have the same genetic material.


What must a cell do before it divides?

Copy it's DNA


Before a cell divides it must first make an exact copy of all of its?

A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.


Why does DNA need to replicate itself?

When cells divide, the new cells produced must have a full set of genes in order to function correctly. Genes are made of DNA so it is necessary to replicate (copy) the DNA before the cell divides.


Before a cell divides it must first duplicate its entire?

Genome


Why must DNA replication before cell division can occur?

DNA must replicate before cell division to make sure that each daughter cell is genetically identical.


What must happen before a cell divides?

Before a cell can dividess, it makes a copy of its DNA (deoxyribonucleic acid).


Before a cell divides the DNA must duplicate itself by what?

in the S-Phase


What process MUST happen in the parent cell before it divides?

before the parent cells divide they have to find there matching cell


What must be true for viruses to be able to replicate?

For a virus to replicate it must insert its own DNA into a host nucleus cell. This newly infected cell finds another host cell to replicate, and a viral infection is produced.


Which process must occur first before any cell division can take place?

Before cell division can take place, the cell must replicate its genetic material (except in Meiosis II).


Why does a cell make a copy of its DNA defore it divides?

Because each cell needs its own set of DNA, there must be two sets of DNA present in a cell before it divides into two.


DNA replicates before a cell divides ensures that each daughter cell has a complete set of what?

DNA replicates before a cell divides ensures that each daughter cell has a complete set of genetic material They must have an identical set of DNA.


Why are viruses thought to have evolved after cells instead of before?

because in order to replicate a virus must enter a host cell


If a cell contains all the genetic material it needs to synthesize protein why must the DNA also replicate?

The DNA only needs to replicate if the cell is going to divide. In a dividing cell the DNA must replicate in order to provide a complete copy of the genome to each new cell.


Why is it important for chromosome be copied before cell division?

Chromosomes must replicate so that both cells that are formed from cell division can have the same genetic material.


When a cell divides what must it pass on to its offspring?

DNA


Why does DNA have to replicate before a cell divides?

Each cell needs to have DNA in it in order to function (with the one key exception of a red blood cell which has no nucleus). In order to make sure each copy of the cell that is produced during cell division has the necessary information to function,the DNA must first be replicated and then each of the cells gets one copy of the DNA.


What k must happen before meiosis can begin?

DNA must replicate before meiosis can begin.


What must the mother cell have before going through meiosis?

A mother cell, or a gamete must have chromosomes that have replicated. Any parent cell must replicate their chromosomes, forming two sets of sister chromatids. This is known as a diploid cell. A cell must be healthy, with functioning centrioles, undamaged chromosomal DNA.


What must happen before meiosis can begin?

DNA doubles and produces sister chromatids before meiosis begins. the chromosomes must replicate


Why is it important for DNA molecule to replicate itself?

DNA must replicate itself before mitotic cell division so that the two new daughter cells have the same amount of DNA, and identical DNA.