DNA

DNA

DNA

• is a nucleic acid

• stands for Deoxyribonucleic acid

• can be found in all living things

• contain the instructions for life

Multiple Choice

What kind of macromolecule is DNA?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

DNA

• is made of nucleotides

• is a double helix

Nucleotides have three parts:

• 5 carbon sugar called doxyribose

• a phosphate group

• a nitrogen base: A, T, C or G

Multiple Choice

The monomer of DNA is a

• monosaccharide

• glycerol

• amino acids

• nucleotide

Multiple Select

Which of the following is NOT a part of a nucleotide?

• sugar

• starch

• phosphate

• nitrogen base

• fatty acid

There are four nitrogen bases:

• Adenine

• Thymine

• Cytosine

• Guanine

Chargaff's Rule

• A goes ONLY with T

• C goes ONLY with G

• 
  

• 
  

Multiple Choice

A will only fit together with

• C

• G

• T

• B

DNA is copied

• during a process called replication

• this occurs during the S phase of interphase

• turns homologous pairs into sister chromatids

• in the nucleus of eukaryotic cells

Multiple Choice

DNA is replicated in the

• cytoplasm

• mitochondria

• nucleus

When DNA replicates

• DNA Helicase "scissors" cuts the DNA double helix to open a replication fork

• DNA Polymerase "pencil" add the complementary A, T, C and G's

• DNA Ligase "glues" it all back together

Multiple Choice

The enzyme that is like the pencil and adds the bases is called

• helicase

• polymerase

• ligase

Multiple Choice

The enzyme that acts like the scissors is

• ligase

• helicase

• polymerase

The two "new" DNA molecules include

• one strand of old DNA

• one strand of new DNA

• considered semi-conservative

Multiple Choice

New DNA molecules contain an old strand and a new strand.

• True

• False