Bio Fall Semester Exam Review 2022

In a DNA molecule, Adenine base pairs with ________,

• Guanine

• Thymine

• Cytosine

• Uracil

DNA is ___________ stranded.

• single

• double

• triple

Let's look at DNA Replication. After we unwind the DNA double helix, one of the original strands is 3' TAC-GGA 5'. What will the new strand of DNA be?

• 5' AUG-CCU 3'

• 3' UUG-CCU 5'

• 5' ATG-CCT 3'

• 3' TAC-GGA 5'

During DNA replication, which enzyme pairs the new bases to the old strand?

• Ligase

• DNA polymerase

• Helicase

• RNA primer

What part of DNA is responsible for the variety in our physical appearances? *This make you unique!

• The phosphate order

• The sugar (deoxyribose)

• The sequence of the nitrogen bases that are a part of the nucleotide

• The sequence of the alternating phosphate and sugars

What part of the nucleotide holds the 2 strands of DNA together?

• Nitrogen bases

• Deoyxribose

• Phosphate

• Sugar

What holds the nitrogen base pairs together?

• Phosphases

• Hydrogen bonds

• Deoxybribose

• Helicase

If DNA cannot leave the nucleus, what structure carries the instructions on how to make protein out of the nucleus to the ribosome?

• tRNA

• mRNA

• Replicated DNA

• rRNA

The DNA strand TAC-GGA is copied to the mRNA strand AUG-CCU in a process called ____________.

• Translation

• Transcription

• DNA replication

• Mitosis

A mutation in a somatic cell can be inherited by offspring.

• True

• False