Practice-DNA

What makes up the SIDES of a DNA ladder?

• nitrogen bases

• sugars & phosphates

• genes & chromosomes

• RNA

What makes up the rungs (steps) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

Which of the following best describes a DNA molecule?

• double helix

• contains ribose

• made of amino acids

• contains Uracil

Nitrogenous bases are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

Cytosine always pairs with

• Adenine

• Thymine

• Uracil

• Guanine

Name this structure

• double helix

• nucelotide

• twisted ladder

• hydrogen bond

Guanine bonds with ______________.

• Adenine

• Guanine

• Cytosine

• Thymine

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

• 5'-TACGGTA-3'

• 3'-TACGGTA-5'

• 3'-ATGGCAT-5'

• 5'-ATGGCAT-3'

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 biotic.