DNA Structure and Replication

Which of the following units are repeatedly joined together to form a strand of DNA?

• Amino Acids

• Nucleotides

• Fatty Acids

• Polysaccharides

The process of DNA replication is called semi conservative because it results in

• none of these

• Two DNA molecules.  One original molecule and one with two new strands

• two exact copies with new strands

• two DNA molecules, each with 1 original strand and one new.

Nitrogen bases are joined by which type of bond?

• polar bonds

• hydrogen bonds

• phosphate bonds

• deoxyribose bonds

Adenine bonds with _____

• Cytosine

• Thymine

• Guanine

• Uracil

Cytosine bonds with ____

• Adenine

• Thymine

• Guanine

• Uracil

What does DNA stand for?

• Deoxyribonucleic acid

• Denitrogenous acid

• Deribonucleic acid

• Diribonucleic acid

The backbone of DNA is made of

• base pairs

• sugars and phosphates

• only sugars

• only phosphates

The shape of DNA is...

• Twisted helix
• Flat helix
• Hexagon
• Pentagon

DNA, in eukaryotes, is found within the...

• Nucleus
• Golgi apparatus
• Cytosol
• Outside the plasma membrane

What are the components of a nucleotide?

• nitrogen base, phosphate group, and 5-carbon sugar

• 5 carbon sugar, purine, and pyrimidine

• nitrogen base and a phosphate group

• DNA, phosphate group, monosaccharide