The Central Dogma

number of A and T bases are equal, the G and C bases are equal... True or False

• True

• False

base composition does not vary between species

• true

• false

DNA is a polymer of nucleotides , each consists three components

• nitrogen base

  deocyribose (pentose sugar)

  phosphate group

• carbon dioxide

  oxygen

  helium

• nitrogen base

  oxygen base

  helium

• phosphate

  protein

  animo acid

The two ring base ____ is paired with a single ringed base _____

• purine, pyramadine

• oxytocin, dopamine

• oxygen, carbon dioxide

• nitrogen, phosphate

What structure is this?

• Partial Chemical Structure

  - untwisted

  - strong covalent bonds

  - antiparallel

• Space Filling model

  - 3D computer generated

• Base Printing DNA

  - nitrogen base and double helix held

What is this model?

• Partial Chemical Structure

• Space Filling Model

• Base Pairing DNA

What is this?

• Partial Chemical Structure

• Space Filling Model

• Base Pairing DNA

the two parental strands reassociate after acting as templates to the new strands

• conservative model

• semiconservative model

• dispersive model

two daughter molecules will have one parental strand and one newly made strand

• conservative model

• semiconservative model

• dispersive model

each strand of both daughter molecules contains a mixture of old and newly synthesized DNA

• conservative model

• semiconservative model

• dispersive model