What are the parts of a bacterial cell from the outside inward?
Capsule,Fimbriae,Pili,Flagella,Cell Wall,Cell Membrane, Cytoplasmic Matrix, Cytoplasm, Glycocalyx, Ribosomes, inclusion Bodies,Nucleiod
What is the Capsule?
It is a polysaccharide layer that lies outside the cell envelope.
Is capsule part of the outer envelope of a bacterial cell?
What is the Nucleoid?
Is Nucleiod surrounded by a membrane?
What is the Cytoplasm?
It is where the functions for cell growth, metabolism, and replication are carried out.
What are Pili?
they are part of bacterial cell that transfer genetic information(conjugation).
What is the singular version of the Pili?
Describe the Pili.
elongated tubes that has long tethers.
What are Fimbriae?
Velcro-like, short and numerous bristles
What do Fimbriae do?
stick to cells and surfaces
What is the Glycocalyx?
a glycoprotein and glycolipid covering that surrounds the cell membranes of some bacteria
What is the other term for Glycocalyx?
What substance is the bacterial cell wall made of?
it is a rigid layer of polysaccharides
What is the Cell Membrane?
It is the actual barrier.
What are Ribosomes?
these are where protein synthesis occurs.
What are Inclusion Bodies?
What is the other term for Inclusion Bodies?
What are Plasmids?
Extrachromosomal genetic units characterized by several features, is a double-stranded DNA that is smaller than and replicates indepently of the cell chromosome, it bears genes that are not essential for cell growth; it can bear genes that code for adaptive traits; and it is transmissible to other bacteria.
What is the typical size and shape of Plasmids?
They are usually small and circular.
What do Plasmids contains?
It contains non essential DNA and antibiotic resistance.
What is the Cytoplasmic Matrix?
the liquid found inside the cells.
Does typical bacterium have a cellular wall based on the cellular envelope?
Does non-typical bacterium have a cellular wall based on the cellular envelope?
Name two differences in cellular components between a typical bacterium and an archaeon.
1. The cell walls of a typical bacterium have peptidoglycans while the cell walls of archeon do not have peptidoglycans.
2. The cell membrane of an archaeon has ether linkages more stable and unique while a typical bacterium has ester linkages.
What are the 2 types of bacterium that help dictate the different cellular abilities of the organism, it’s environmental niche, and treatment with antibiotics?
1. Gram-negative 2. Gram-positive
What are the 3 chemical compositions of Gram-positive cell wall?
1. peptidoglycan 2. teichoic acid 3.lipoteichoic acid
What are the 3 chemical compositions of Gram-negative?
1. Phospholipids 2. Lipoproteins 3. lipopolysaccharide.
What dictates the cellular activities and environmental niche of bacteria?
the presence of the chemicals in the cell envelopes of the respective bacterium.
What are the four functions of the presence of lipopolysaccharide in Gram-negative bacterium?
1. aids in the stabilization of the membrane structure 2. acts as endotoxin 3. acts as a protective barrier, and imparts strong negative charge due to the charged sugars and phosphates.