i need some help in bioc 371 homework

[somi_91]

السلام عليكم ...
لا أطول عليكم بس عندي homework في الكيمياء حيوي ودورتلو على جواب ومالقيت
أتمنى أنكم تقدرو تساعدوني
1st homework
Show how to form the dipeptide valylphenylalanine...

2nd homework
How does the fiberoscope help to heal bleeding ulcer

3rd homework
Suggest a reason why enzymes can be partially protected from thermal denaturation by high concentrations of substrate