Mini Wiki 6b: More Organelles!

Last time on mini wikis I introduced you guys to the world of organelles, today we’re going to look at some of the organelles in cells. Let’s get started:

animal_vs_plant_cell

Nucleus

The nucleus is like the central console of the cell. It’s  a membrane bound structure that contains the cell’s hereditary (DNA) information and controls the cell’s growth and reproduction. Its the most prominent of all the organelles and can be seen using a normal microscope. (No fancy electron microscope to see these guys in action). The nucleus itself has quite a complex structure but that’s for another wiki.

2000px-Diagram_human_cell_nucleus.svg

Mitochondria

Otherwise known as “the powerhouse of the cell”. This is where ATP is created which can then be used all over the cell and is where all the cellular respiration takes place. It’s also involved in cell division, growth and death. Again mitochondria have an intricate structure. There is a theory that suggests mitochondria were once an organism all by its self. You can read about that here.

Structure-of-Mitochondria_cIvyRose

Endoplasmic Reticulum

These are like long tubes of membranes. Some have ribosomes dotted on the outside (Rough ER) and some regions don’t have them (smooth ER). It’s in charge of moving things as well manufacturing. Endoplasmic reticulum makes membranes, secretory proteins, carbohydrates, lipids, and hormones.

Ribosome

Ribosomes are on the smaller side of organelles, this has the job of protein production. Ribosomes are found suspended in the cytosol or bound to the endoplasmic reticulum.

d3027730681b4cda353ea0e3895b6670ce9024ea.png

Cytoplasm

This is the gel-like substance within the cell membrane containing water, enzymes, salts, organelles, and various organic molecules.

Cell Membrane

Yes, this is an organelle. It’s the dividing border between cells as well as between organelles. It consists of a phospholipid bilayer, as well as proteins and cholesterol (yes you read that right). The proteins are used for communication with other cells and chemical compounds, as well as being used for transport over the lipid bilayer. Wherever you see a solid line in a diagram you can almost always assume its cell membrane.

10 Cell Membrane Structure

Golgi Complex/Apparatus

The Golgi apparatus is the “manufacturing and shipping center” of a eukaryotic cell.

The Golgi apparatus, sometimes called the Golgi complex or Golgi body, is responsible for manufacturing, warehousing, and shipping certain cellular products, particularly those from the endoplasmic reticulum (ER). Depending on the type of cell, there can be just a few complexes or there can be hundreds.

116252-120-E654E669.jpg

In conclusion, obviously there are more organelles to go over and we will be looking into those in part c. For now if you want to see more Mini Wikis just click here.

Sources

Bailey, R.. (2016). Organelles. Available: http://biology.about.com/od/cellanatomy/ss/organelles.htm. Last accessed 24th Aug 2016.

ThatBiologist Everywhere!

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