Bio class 3

Question 1

What does semiconservative replication mean?

Answer 1

After DNA replication one strand of DNA double helix is composed of all DNA and the other is composed of newly synthesize DNA

Question 2

What are the differences of DNA and RNA

Answer 2

DNA= Double stranded
Bases= AG, CT
Sugar deoxyribose

RNA=single stranded
bases= AG, CU
Sugar ribose

mRNA=Translated to make protein
rRNA= needed to make functional ribosome
tRNA= carries an AA to a ribosome to be incorperated into a growing protein

Question 3

For glycolysis: What happens to the carbon chain? Where does ATP enter/exit? What are the end products? How are they prepared for Krebs Cycle?

Answer 3

six carbons (glucose), phosphorylated twice, split into three carbons and dephosphorylated (pyruvate).

ATP entries twice to phosphorylate glucose. ATP exists when phosphorylated carbon chain is split.

Products= 2 ATP, 2 NADH, 2Pyruvate

Pyruvate must be decarboxylated