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level: GRAM POSITIVE, GRAM NEGATIVE

Questions and Answers List

Question	Answer
Consists of several layers of peptidoglycan which form a thick-rigid structure, about 20 – 80 nanometers. contain teichoic acids, which are made up of an alcohol particularly a glycerol or ribitol and a phosphate group which is negatively charged	Gram-Positive Cell Walls
It is thinner and more complex but it is more susceptible to mechanical breakages because of thin peptidoglycan layers	Gram-Negative Cell Walls
Because of it, this makes the gram-negative bacteria more resistant to antibiotic.	periplasmic space or periplasm
Lipids make cells impermeable to many stains, and protect them from acids, alkalis, and antibiotics. Organisms grow slowly because nutrient penetrate inefficiently and cells spend a lot of energy making lipids.	Acid-Fast Bacteria (gram positive and 60% peptidoglycan cell wall which is waxy)
Example of acid fast bacteria	Microbacterium Tuberculosis.
The smallest known bacteria that can grow and reproduce outside of host cells	Mycoplasmas
1 They lack cell walls. those who have lack peptidoglycan. 2 Instead of peptidoglycan, they have __	1 Archaebacteria 2 pseudomurein.
1 The gram-positive stains __ 2 The gram-negative stains __	1 purples (crystal violet) 2 pink (safranin)