The two main stages of eukaryotic cell division are mitosis and cytokinesis. Mitosis refers to the division of the cell's nucleus while cytokinesis is the division of the cell's cytoplasm.
Prior to cell division, the cell undergoes another stage called interphase. During this stage, DNA replication, protein production and organelle proliferation occur. Cell division begins with prophase, which is the first phase of mitosis. It is then followed by metaphase, anaphase and telophase. At the end of telophase, a nuclear membrane forms around the diploid daughter chromosomes, which are now located at polar opposites of the cell. During cytokinesis, the daughter chromosomes become individual diploid daughter cells.Learn More
The major energy carrier molecule in cells is adenosine triphosphate (ATP). Adenosine triphosphate is a nucleoside triphosphate that stores all of the energy inside of cells.Full Answer >
Photoconductive cells alter the resistance of an electrical circuit in relation to the amount of light hitting the cell. This is why photoconductive cells are sometimes called photoresistive devices. Photoconductive cells are frequently used in applications such as street lamps, which come on as the ambient light levels drop below a certain threshold.Full Answer >
The nuclear envelope controls the flow of information into and out of the nucleus. It is a porous double membrane that allows the free passage of water, ATP and other small molecules. It regulates the passage of macromolecules, which are much larger, and these are the molecules that carry information.Full Answer >
In a phospholipid bilayer, the polar head of each layer points outwards, while the long nonpolar lipid chains of each layer points towards the middle. A phospholipid bilayer membrane is a specific type of lipid bilayer where all the polar heads contain a phosphate group.Full Answer >