AP Biology - Molecular Genetics

This scientist(s) mixed heat-killed virulent bacteria with living nonvirulent bacteria and was able to convert the nonvirulent to becoming virulent bacteria

• Hershey-Chase

• Watson and Crick

• Griffith

• Avery

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-4

If a certain segment of DNA contains 22% adenine, then what percentage is guanine?

• 22%

• 56%

• 44%

• 28%

DNA polymerase synthesizes a new strand of DNA in which direction?

• 3' --> 5'

• 5' --> 3'

• 5' --> 5'

• 3' --> 3'

This enzyme is the "glue" that links together Okazaki fragments in the lagging strand.

• DNA Polymerase

• DNA Ligase

• DNA Helicase

• Topoisomerase

Which preserve the newly formed mRNA as it travels from the nucleus into the cytoplasm?

• TATA box

• 5' GTP cap

• Poly-A tail

• Promoter sequence

Which region of a gene is most likely to cause damage to a cell?

• Exon

• Intron

Ribosomes are made of these two things.

• Protein

• tRNA

• rRNA

• mRNA

Viral host range is determined by

• the proteins on its surface

• the proteins on the host cell surface

• whether it contains DNA or RNA

• the enzymes it produces to cause infection

Retroviruses contain single-stranded ____ that acts as the template for ____ synthesis.

• DNA; RNA

• DNA; DNA

• RNA; DNA

• RNA; RNA

This is why pancreatic cells are structurally different than liver cells.

• Use of different genetic codes

• Different chromosomes in each

• Varying genes in each

• Expressing only certain genes in each