1- lysozyme will also act against gram negative bacteria .
2- Penicillin couldn’t kill gram negative bacteria
But according to me-
1- Lysozyme doesn’t work against in most gram negative bacteria
2- but penicillin comprises a group of compounds on that broad spectrum like ampicillin & Amoxicillin can kill them.
If we talk about antibiotic resistance then most gram negative are resistant to penicillin-G.
Please clear the confusion. Give references