DNA and DNA Replication Prac.

Front

What is DNA?

Back

DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

Front

What are the components of a DNA nucleotide?

Back

A DNA nucleotide consists of three components: a phosphate group, a deoxyribose sugar, and a nitrogenous base (adenine, thymine, cytosine, or guanine).

Front

What is the structure of DNA?

Back

DNA has a double helix structure, which consists of two long strands of nucleotides twisted around each other, held together by hydrogen bonds between complementary nitrogenous bases.

Front

What are nitrogenous bases?

Back

Nitrogenous bases are the building blocks of DNA and RNA. In DNA, the four bases are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is complementary base pairing?

Back

Complementary base pairing refers to the specific pairing of nitrogenous bases in DNA: adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G).

Front

What is the role of DNA polymerase in DNA replication?

Back

DNA polymerase is an enzyme that synthesizes new DNA strands by adding nucleotides to a growing chain during DNA replication.

Front

What is the purpose of DNA replication?

Back

The purpose of DNA replication is to produce two identical copies of DNA, ensuring that each new cell receives a complete set of genetic information.

Front

What are the steps of DNA replication?

Back

The steps of DNA replication include: 1) Unwinding the double helix, 2) Complementary base pairing, 3) Joining of nucleotides to form new strands.

Front

What type of bond holds the nitrogenous bases together in DNA?

Back

Hydrogen bonds hold the nitrogenous bases together in DNA, allowing the two strands to separate during replication.

Front

What is the significance of the sequence of nitrogenous bases in DNA?

Back

The sequence of nitrogenous bases in DNA determines the genetic information and instructions for building proteins, which are essential for the structure and function of living organisms.