Gram-1 cells are more susceptible to penicillin than Gram-2 cells because the thick 3 cell walls of Gram-positive cells are critical for their function. Gram-negative cells also contain an outer4, which excludes small molecules, such as antibiotics

1: positive, 2: negative, 3: layer of peptidoglycan, 4: thin layer of peptidoglycan and slime body

Explanation: gram-positive cells are more receptive and susceptible to penicillin and/or cell wall targeted antibiotics despite their thick layer of peptidoglycan. However, gram-negative cells which has a thin layer of the peptidoglycan but it possesses slime body which helps them to wade off antibiotics attacks. This helps them to become resistance to antibiotics and makes them stronger.

my teacher would say no s

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate