DNA Structure

Front

DNA is arranged into a ________- _________ shape.

Back

double-helix

Front

The backbone of DNA is made of

Back

sugars and phosphates

Front

Which of the following is a base pair?

Back

Cytosine - Guanine

Front

The two strands of DNA are held together with

Back

hydrogen bonds

Front

DNA is found within the _____________ of a cell.

Back

nucleus

Front

What are the four nitrogenous bases in DNA?

Back

Adenine, Thymine, Cytosine, Guanine

Front

What is the function of DNA?

Back

To store and transmit genetic information.

Front

What is the role of hydrogen bonds in DNA structure?

Back

They hold the two strands of DNA together.

Front

What is the difference between purines and pyrimidines?

Back

Purines (Adenine, Guanine) have a double-ring structure; pyrimidines (Cytosine, Thymine) have a single-ring structure.

Front

What is the significance of the 5' and 3' ends of DNA strands?

Back

They indicate the directionality of the DNA strands, crucial for replication and transcription.