Exam I short answer Flashcards
1
Q
Is more aspirin absorbed into the bloodstream from the stomach or the small intestine?
A
Aspirin is neutral at pH 1.5 (pH below the pKa where molecule would be protonated) and thus passes more rapidly in the stomach. See E1pg8
2
Q
What is a nucleoside?
A
a base attached to a ribose or deoxyribose, uridine, adenosine
3
Q
What is an amphiphile?
A
a compound with both water-loving and fat-loving parts… hydrophobic and hydrophilic
4
Q
Free energy is positive for the formation of a peptide from individual amino acids and is thus endergonic. How do cells accomplish the process?
A
By coupling this to a reaction w/ a large ^G so the net ^G is negative
