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What is the complement to the DNA strand below:
5'-ATGCCAT-3'

• 5'-TACGGTA-3'
• 3'-TACGGTA-5'
• 3'-ATGGCAT-5'
• 5'-ATGGCAT-3'

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

What is the significance of the sequence (order) of the Nitrogen Bases in DNA?

• The order of the Nitrogen Bases determines the number of chromosomes present in an organism.
• The order of the Nitrogen Bases determines the traits that an organism will possess (have).
• The order of the Nitrogen Bases determines the gender of an organism.
• The order of the Nitrogen Bases determines whether an organism is abiotic or biotic.

What three parts make up 1 nucleotide?

• Phosphate

• Sugar

• Nitrogen containing base

• Lipid

What is the end result of DNA replication?

• 2 semi-conservative strands of DNA

• 1 semi-conservative strand of DNA

• Half of a semi-conservative strand.

• Nothing is created

Chargaff's rules state that....

• The amount of A's always = the amount of C's and the amount of T's always = the amount of G's.

• The amount of A's always = the amount of A's and the amount of C's always = the amount of C's.

• The amount of A's always = the amount of G's and the amount of C's always = the amount of T's.

• The amount of A's always = the amount of T's and the amount of C's always = the amount of G's.

What bases are considered Purines?

• A & G

• A & T

• C & G

• C & A

What bases are considered Pyrimidines?

• A&G

• A&T

• C&T

• C&G

What does the term semi-conservative mean?

• DNA consists of half an old strand and half a new strand and the code stays conserved.

• DNA consists of two old strands and the code stays conserved.

• DNA consists of two new strands and the code stays conserved.

• DNA consists of half an old strand and half a new strand and the code changes each time.

Look at the image of DNA, what do the circles represent?

• Sugars

• Phosphates

• Bases

• Covalent Bonds