Function

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Function of Bacterial plasmid
October 2, 2017

Function of Bacterial plasmid

A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell s chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance. Plasmids have a wide range of lengths, from roughly one thousand…

Function of Bacterial
October 4, 2016

Function of Bacterial

The crystal structure of the membrane-integrated nitric oxide reductase cNOR from Pseudomonas aeruginosa was determined. The smaller NorC subunit of cNOR is comprised of 1 trans-membrane helix and a hydrophilic domain, where the heme is located, while the larger NorB subunit consists of 12 trans-membrane helices, which contain heme b and the catalytically active…

Major Functions of Cytoplasm
April 29, 2017

Major Functions of Cytoplasm

Cytoplasm, a jelly like substance (called cytosol or cytoplasmic matrix or hyaloplasm) and composed of mainly water is found between the cell membrane and nucleus. It contains the structures and substances needed to decode the instruction of DNA and carry on the activates of the cell. Cytoplasmic structures comprises three groups: organelles, cytoplasmic inclusions…

Function of pili in Prokaryotic cell
June 15, 2016

Function of pili in Prokaryotic cell

Cell wall: Protects the cell from the outside environment and maintains the shape of the cell. It also prevents the cell from bursting if internal pressure rises. Plasma membrane : Semi-permeable membrane that controls the substances moving into and out of the cell. It contains integral and peripheral proteins. Substances pass through by either active or passive…

Bacterial cells Organelles and their Functions
June 21, 2016

Bacterial cells Organelles and their Functions

There is compelling evidence that mitochondria and chloroplasts were once primitive bacterial cells. This evidence is described in the endosymbiotic theory. How did this theory get its name? Symbiosis occurs when two different species benefit from living and working together. When one organism actually lives inside the other it s called endosymbiosis. The endosymbiotic…

Cell Functions and Parts
August 12, 2014

Cell Functions and Parts

The nucleus is where the DNA is kept and RNA is transcribed. RNA is moved out of the nucleus through the nuclear pores. Proteins needed inside the nucleus are transported in through the nuclear pores. The nucleolus is usually visible as a dark spot in the nucleus, and is the location of ribosome formation. Ribosomes are where RNA is translated into protein. This…

Prokaryotic cells Functions of Organelles
April 14, 2017

Prokaryotic cells Functions of Organelles

All living things are made up of a cell or cells, and all cells are either prokaryotic or eukaryotic. A eukaryotic cell is a complex cell with a nucleus and many organelles. Eukaryotic cells are the building blocks of all animals, plants and fungi. Prokaryotic cells are very simple cells with fewer structures than eukaryotic cells; one primary difference is that…