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3 years ago

Time when cell grows and replicates DNA?

Biology

2 answers:

AleksAgata [21]3 years ago

7 0

<h2>Answer:</h2>

DNA replication takes place only in the S phase of the cell cycle.

<h2>Explanation:</h2>

In molecular biology, DNA replication is the organic means of creating two same duplicates of DNA from one original DNA molecule. This system happens in all existing organisms and is the foundation for biological inheritance.

The cells proceed to grow in G-1, S and G-2 phase. Although DNA replication takes place just in the S phase of the cell cycle.

Wittaler [7]3 years ago

5 0

Replication of the DNA and cell growth occur during the S-Phase of the cell cycle.

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2 years ago

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4 years ago

There are 258 g of MgCl2/liter. What is the molarity of the solution?

Zolol [24]

Taking into account the definition of molarity, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

<h3>Definition of molarity</h3>

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles÷ volume

<h3>Molarity of the solution in this case</h3>

In this case, you know that the molar mass of MgCl₂ is 95.21 g/mole [molar mass is the amount of mass that a substance contains in one mole.]

You can apply the following rule of three: If by definition of molar mass 95.21 grams are contained in 1 mole, 258 grams are contained in how many moles?

amount of moles= (258 grams× 1 mole)÷ 95.21 grams

<u><em>amount of moles= 2.7098 moles</em></u>

Replacing in the definition of molarity:

258 g of MgCl₂/liter= <u><em>2.7098 moles of MgCl₂/liter</em></u>

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Finally, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

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