Unit 4 Test Review

Front

What happens to each strand during DNA Replication?

Back

Each strand serves as a template for a new complementary strand.

Front

What are the chunks of three that mRNA is read in called?

Back

Codons.

Front

What are the steps for protein synthesis?

Back

DNA-RNA-Amino Acid-Protein.

Front

What is a type of substitution in which no amino acids change called?

Back

Silent mutation.

Front

Why is the genetic code considered universal?

Back

It is nearly the same in all organisms.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA carries the genetic information from DNA to the ribosome.

Front

What is the function of tRNA in protein synthesis?

Back

tRNA brings amino acids to the ribosome and matches them to the codons in mRNA.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in protein synthesis.

Front

What is the difference between a missense mutation and a nonsense mutation?

Back

A missense mutation changes one amino acid in a protein, while a nonsense mutation creates a premature stop codon.

Front

What is the central dogma of molecular biology?

Back

The central dogma describes the flow of genetic information from DNA to RNA to protein.