DNA Structure and Replication

Front

What is the structure of a DNA molecule?

Back

A DNA molecule is structured as a double helix.

Front

How do you replicate a DNA strand?

Back

To replicate the DNA strand AATCATGGA, the complementary strand is TTAGTACCT.

Front

What part of a DNA molecule codes for specific proteins?

Back

The sequence of nucleotide bases in the DNA molecule is responsible for coding specific proteins.

Front

What is the result of DNA replication?

Back

DNA replication results in two DNA molecules, each with one new strand and one original strand.

Front

What is a nucleotide?

Back

A nucleotide is the basic building block of DNA, consisting of a phosphate group, a sugar (deoxyribose), and a nitrogenous base.

Front

What are the four nitrogenous bases in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What base pairs with adenine in DNA?

Back

In DNA, adenine pairs with thymine (A-T).

Front

What base pairs with cytosine in DNA?

Back

In DNA, cytosine pairs with guanine (C-G).

Front

What is the role of hydrogen bonds in DNA?

Back

Hydrogen bonds hold the two strands of the DNA double helix together.

Front

What is the function of DNA polymerase?

Back

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