REVIEW #3

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30

• 15

• 20

• 60

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA

• TTAGTACCT

• UUAGUACCU

• GGATAUCUA

A scientist observes a base sequence of AGCTAGCTAGCT.  Which of the following would be the complimentary strand?

• TGCATGCATGCA

• TCGATCGATCGA

• TAGCTAGCTAGC

• TTAAGGCCTTCC

A process in which DNA has the unique ability to make an exact copy of itself.

• Replication

• Translation

• Transcription

The bonds that hold the two strands of DNA together come from...

• the attraction of phosphate groups 

• strong bonds between  bases and sugars

• carbon to carbon bonds in the sugar

• weak hydrogen bonds between the bases

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

• ribose sugar and base

• ribose sugar and phosphate group

• nitrogen base and deoxyribose sugar

• deoxyribose sugar and phosphate group
  

What is responsible for holding the two strands of the DNA double helix together?

• hydrogen bonds

• alleles

• London dispersion forces

• deoxyribose sugars

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine

• adenine, thymine cytosine, and guanine

• adenine, thymine, cytosine, and gylcerol

• adenine, thymine, cytosine, and glucose

Which organelle is DNA usually found in?

• cell membrane

• vacuole

• chloroplast

• nucleus