answers study questions 4

answers study questions 4 - Study questions 4 If a strand...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Study questions 4 If a strand of DNA contains only purines, the complementary strand 1. Will not contain the following bases : (G,A) because it must contain only pyrimidines 2. Will have a molecular weight (heavier), because (double-ringed purines are heavier than pyrimidines) Consider the phosphate containing backbone of DNA 3. The ionizing properties of the backbone make it (acidic and hydrophilic) 4. A protein that has the following property would be more likely to bind and stick to DNA: (ba- sic and hydrophilic) 5. Consider the difference between ice and water. Which one has more intact H-bonds? Ice 6. Using water as a model, predict the simplest physical treatment that would cause the two strands of dsDNA to separate. Heat. Heat breaks H-bonds in ice to make water and can also break the H-bonds that base pair DNA. 7. Suppose that you have two types of DNA. One, called S, is single stranded and does not dis- play any internal pairing. The other one, called D, is double stranded. You have a simple
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/06/2010 for the course BIO SCI 2A 54936 taught by Professor Comai during the Spring '10 term at UC Davis.

Ask a homework question - tutors are online