Protein Synthesis

A gene is a section of DNA whose base sequence...

• is three bases long

• codes for a particular polysaccharide

• codes for a particular protein

• varies widely between related organisms

What is a chromosome?

• The proteins that are found in a cell's nucleus

• Genes that are involved in the same function

• A single molecule of DNA wrapped around proteins

• All of the genetic material in a cell

Why is DNA wrapped around proteins?

• To prevent it from being accessed

• To condense it

• To make it more stable

• None of the above

What does the term genome refer to?

• The number of chromosomes in a cell

• An experiment to sequence an organism's DNA

• An organism's complete set of genetic material

• The length of a chromosome

In somatic cells, chromosomes exist in matching pairs, known as

• Homologous chromosomes

• Heterozygous chromosomes

• Homozygous chromosomes

• Heterologous chromosomes

What is the purpose of DNA replication?

• Make proteins

• Make back ups of the genome

• Make an identical copy of the DNA

• Make gametes

When do cells perform DNA replication

• When they are growing

• Before cell division

• After cell division

• When damage occurs

Which enzyme unzips the DNA during replication?

• DNA polymerase

• DNA helicase

• DNA ligase

• DNA transcriptase

Which enzyme adds nucleotides to a single strand of DNA during replication?

• DNA polymerase

• DNA helicase

• DNA ligase

• DNA transcriptase

How is the structure of the DNA backbone described?

• Hydrogen-bonded

• Sugar-phosphate

• Base-pairs

• Complementary paring