Biology unit 6&7 review!!

Front

What are the nucleotides of DNA?

Back

Adenine (A) and Guanine (G) are purines; Thymine (T) and Cytosine (C) are pyrimidines.

Front

What do mRNA molecules attach to during translation?

Back

mRNA molecules attach to the small subunit of the ribosome.

Front

What role does tRNA play in protein synthesis?

Back

tRNA delivers amino acids to the ribosome.

Front

How are amino acids joined together during translation?

Back

Amino acids are joined together by the large subunit of the ribosome.

Front

What is a silent mutation?

Back

A silent mutation is a change in the DNA sequence that does not affect the amino acid sequence of the protein.

Front

What is transcription in molecular biology?

Back

Transcription is the process of copying a segment of DNA into mRNA.

Front

What is the structure at the 5' end of an RNA molecule?

Back

The 5' end has a phosphate group.

Front

What is the structure at the 3' end of an RNA molecule?

Back

The 3' end has a hydroxyl group.

Front

What are the two types of nitrogenous bases in DNA?

Back

Purines (A & G) and pyrimidines (T & C).

Front

What is the function of the ribosome in protein synthesis?

Back

The ribosome facilitates the translation of mRNA into a polypeptide chain.