DNA & Cell Cycle review Slides

What are the building blocks of DNA?

DNA is made up of nucleotides.

What three components make up a nucleotide?

Each nucleotide consists of a sugar, phosphate, and a nitrogen base.

What pairs with adenine (A) in DNA?

Thymine (T) pairs with adenine (A).

What pairs with guanine (G) in DNA?

Cytosine (C) pairs with guanine (G).

What does the sequence of nitrogen bases determine in organisms?

The sequence of the nitrogen bases leads to variation in organisms.

How does rearranging nucleotides affect DNA information?

Rearranging the nucleotides changes the information on the DNA strand.

What phases make up the cell cycle?

The cell cycle consists of Interphase (G1, S, G2) and Mitosis.

What is the purpose of the S phase in the cell cycle?

DNA must replicate in the nucleus during the S phase to make more cells.

What occurs during mitosis?

The cell divides into 2 new identical daughter cells.

What is the result of uncontrolled cell cycle regulation?

It can lead to cancer, which includes masses of tissue called tumors.