Week 15

Questions #58 and #59 please

Penicillin binds to transpeptidase thereby preventing enzyme activity. A) If penicillin binds at the active site, is this a competitive or noncompetitive inhibitor? 2) It is irreversible, so the bond formed between the enzyme and antibiotic is likely or hydrogen bond)? (covalent, ionic 3) The enzyme has a Ser at the active site. Is penicillin polar or nonpolar? 4) What is a possible chemical bond on the penicillin that will attract this active site?

What other chemistry tests could be useful in a cardiac workup?   Question 10 options:   A)  ESR and GGT   B)  homocysteine and myoglobin   C)  amylase and lipase   D)  AST and ALT

Why do you think both enzymes tested have the exact same optimal working temperature (i.e. temperature they work best at)?

1

How many subunits are present in catalase? What metal ion is necessary for its activity?What two amino acids found in the active site of the molecule assist with the catalysis?Draw their structures.

Viagra inhibit PDE5？what does it means？what will happen if Viagra inhibit PDE5？

Could you help me with this? I'm stuck on this question.