Prokaryotic cells and gram positive/negative
What is a Prokaryotic Cell?
A Prokaryotic Cell is single celled with a simple simple. It has no nucleus or a membrane-bound organelles.
give the definition of the function of the bacteria cell
DNA is free in the cytoplasm of a prokaryotic cell in the area called the nucleoid. The section of DNA containing a genetic code for a metabolite unwinds and hydrogen bonds break. RNA nucleotides line up then messenger RNA is formed. This is known as transcription.
What is the function and structure of the cell wall of a prokaryotic cell?
Function - Protects and supports each cell Structure - Prokaryotic cells are surrounded by a cell wall made of peptidoglycan.
What is the function and structure of the capsule of a prokaryotic cell?
Function - Protects the cell and prevents dessication. Structure- Slippery outside layer outside the cell wall of some species of bacteria.
What is the function and structure of the ribosomes of a prokaryotic cell?
Function- protein synthesis occurs at the ribosomes structure- smaller than ribosomes found in eukaryotic cells. They consist of two sub-units and they are not surrounded by a membrane
What does gram negative cells have?
Gram negative cells have a thinner wall and two lipid membranes
What is the function and structure of the nucleoid of a prokaryotic cell?
function- The nucleoid is the region where generic information can be found and controls cellular activity Structure- The nucleiod is the irregularly shaped region that holds the nuclear material without a nuclear membrane and where the genetic materical is loacalised. The DNA forms one circular chromosome.
What is the function and structure of the plasmid of a prokaryotic cell?
function- plasmids carry genes that may benefit the survival of the organism structure- small loops of DNA
Whats the difference between gram positive and negative?
gram positive gives out a purple stain while gram negative gives out a pink stain.