DNA Structure and CANCER Dec 9.Dec 100

Front

Why is DNA important?

Back

It serves as the blueprint for traits of all living things and is involved in gene expression.

Front

What is cancer?

Back

Uncontrollable cell growth where the cells go through the cell cycle many times.

Front

Which two molecules form the sides (backbone) of the DNA ladder?

Back

Deoxyribose (sugar) and phosphate.

Front

Who discovered the model of the DNA double helix?

Back

James Watson and Francis Crick.

Front

What is a nucleotide?

Back

The basic building block of DNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Front

What are the four nitrogenous bases in DNA?

Back

Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

Front

What is the structure of DNA?

Back

DNA is structured as a double helix, resembling a twisted ladder.

Front

What role do hydrogen bonds play in DNA?

Back

Hydrogen bonds hold the nitrogenous bases together, forming the rungs of the DNA ladder.

Front

What is gene expression?

Back

The process by which information from a gene is used to synthesize a functional gene product, usually a protein.

Front

What is the function of the phosphate group in DNA?

Back

The phosphate group links the sugar molecules, forming the backbone of the DNA strand.