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What happens to the unzipped DNA molecule?

DNA replication occurs through the help of several enzymes. These enzymes “unzip” DNA molecules by breaking the hydrogen bonds that hold the two strands together. Each strand then serves as a template for a new complementary strand to be created. Complementary bases attach to one another (A-T and C-G).

What happens when DNA unzips during DNA replication?

DNA helicase “unzips” the two sides of the DNA strand by breaking the hydrogen bonds between bases. DNA polymerase matches free nucleotides to the exposed bases, creating new strands by using the halves of the old strands as templates (semi-conservative replication).

What causes DNA to unzip?

The breaking of the hydrogen bonds due to the force relieves the torsional stress stored in a double helix. As a result, the nucleotide strands rotate more freely about the axis of a helix and start unwinding. The DNA unwinding occurs simultaneously with the DNA unzipping.

What is the other name for DNA?

Deoxyribonucleic Acid (DNA) DNA is the chemical name for the molecule that carries genetic instructions in all living things. The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix.

What is DNA and what are its components?

DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.

What is the role of nitrogenous bases in DNA?

The nitrogenous bases of each strand face each other and complementary bases hydrogen bond to each other, stabilizing the double helix. Heat or chemicals can break the hydrogen bonds between complementary bases, denaturing DNA.

What is the difference between DNA and RNA quizlet?

The three main differences between RNA and DNA is that (1) The sugar in RNA is ribose instead of deoxyribose, (2) RNA is generally single-stranded and not double-stranded , and (3) RNA contain uracil in place of thymine. Messenger RNA carry information from DNA to other parts of the cell.

What is the one job in which most RNA molecules are involved?

protein synthesis

How do the functions of DNA and RNA differ quizlet?

– They are both necessary for the cell to produce proteins. – DNA makes mRNA which then is translated into protein. -DNA is double-stranded, RNA is single-stranded. – DNA contains a pentose sugar Deoxyribose, RNA contains the pentose sugar Ribose.

What is the main function of DNA quizlet?

What is DNA’s primary function? producing the proteins and enzymes that every cell needs/DNA acts to pass on traits. You just studied 31 terms!