IB Biology Y1S1 Review

Front

What contributes to the variability of the genetic code?

Back

The diversity of DNA base sequences.

Front

What is complementary base pairing in DNA?

Back

A-T and G-C.

Front

What is the structure of DNA described as?

Back

Double helix.

Front

What determines the code of a DNA molecule?

Back

The order (sequence) of the nitrogen bases.

Front

Give examples of atypical cells.

Back

Red blood cells and muscle cells.

Front

What are the four nitrogen bases in DNA?

Back

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

Front

What is the function of DNA?

Back

To store and transmit genetic information.

Front

What is the role of RNA in protein synthesis?

Back

To act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to changes in protein structure and function.