Biology Semester 2 Test

Match the DNA strand with the correct DNA base pairs.

A A T G C C T T A G

• G G A C C G A T C

• T T A C G G A A T C

• C C T G C A A T G C

• U U A C G G U U G C

Match the original DNA strand with the matching RNA base pairs.

A A T C C G A C G T

What kind of bonds hold together matching base pairs in a DNA strand?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Nitrogen bond

Which molecule does NOT help make up a nucleotide in DNA?

• Sugar

• Phosphate

• Water

• Nitrogen Base

Which enzyme breaks apart the hydrogen bonds between nitrogen bases for DNA replication?

• Polymerase

• Primase

• RNA Primer

• Helicase

Which RNA carries the replicated strand from the nucleus to the cytoplasm?

• mRNA

• tRNA

• dRNA

• oRNA

Which organelle hosts the process of turning DNA into proteins?

• Ribosome

• Golgi Aparatus

• Mitochondria

• Lysosome

Alterations that occur within a DNA sequence.

• Transformations

• Alterations

• Mutations

• Changes

Which type of mutations changes one allele for another?

• Substitution

• Deletion

• Insertion

Type of mutation where one base is added to the copy.

• Substituion

• Insertion

• Deltion