GB Molecular Genetics

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.MS-LS3-1

NGSS.MS-PS1-1

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30
• 15
• 20
• 60

What did Erwin Chargaff conclude from his experiments?

• Nitrogen bases are held together by peptide bonds
• A and T, C and G always occur in equal amounts
• Proteins are the carriers of genetic information
• C and G rarely occur in eukaryotic organisms

What was Watson and Crick's main scientific accomplishment?

• Building the first accurate model of DNA
• Isolating strains of pneumonia causing bacteria
• Determining base pairing rules
• Discovering the process of genetic transformation

By using radioactive isotopes, Hershey and Chase were able to conclude that _____ is the carrier of genetic information.

• DNA
• Protein
• Carbohydrate
• Lipid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Replicate the following strand of DNA:

AATCATGGA

• AATCATGGA

• TTAGTACCT

• UUAGUACCU

• GGATAUCUA

Tags

NGSS.HS-LS1-1

The enzyme that unzips the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase

Sometimes, DNA is called "semi-conservative." Why might this be?

• The old strand is "conserved" and used to make the new strands

• Uracil is "conserved" in that it is only used to make the new strands

• ATP is "conserved" via the usage of facilitated diffusion

• Ligase is "conserved" in that it is denatured by the process