Organelle

For my self-selected assignment I decided to look further in depth into the Endosymbiotic theory, which describes how cells have evolved over time. I chose this particular field of study because I found it very interesting of how cells could fuse together to form a more advance cell that is capable of new and more complex functions than before. I also found it interesting that it describes how we as human’s aka multicellular organisms were begging to be formed. However, the process behind the…

The purpose of Activity 1 of this lab is to understand how cell transportation works, The purpose of the second part is to explore semipermeable membranes. The purpose of Activity 3 is to explore how the size of a cell affects cell transportation. Background All cells are surrounded by a barrier called the cell membrane. It regulates what enters and leaves the cell, and also protects and supports the cell. Cell membranes are semipermeable, meaning it doesn’t allow all molecules to pass through…

Lysosomes are one of the abounding organelles that make up a typical eukaryotic cell. A typical human cell contains hundreds of lysosomes but can be found in much higher quantities in cells more directly involved in exocytosis and cells of the immune system. Under a microscope, lysosomes can be observed as spherical-shaped, tiny membranous sacs composed of a single phospholipid bilayer that separates the acidic interior (pH 4.8-5) from the rest of the cell. The acidity is maintained by the…

What have I done wrong!” How would you feel if I told you that this dramatic play had something to do with a plant cell? Well, first off, it’s not just dramatic plays, any play will do. Secondly, there are a lot of organelles in a plant cell so I will just be stating the organelles that I think best correspond with different parts needed to produce a play. This piece of writing will include things from the actors to the stage to the actual theater itself. So, starting with the nucleolus, this…

How the human body works Cell membrane: A cell membrane is a thin layer that forms a semi- permeable barrier around the outer surface of the cytoplasm of the cell and controls the movement of substances into and out of the cell. Nucleus: It contains DNA for making new cells and organisms and also controls the reaction in the cell. Chromosomes: Thread- like structures found in the nucleus of the cell which carry the genetic information Cytoplasm: The liquid gel which makes up a lot of the body of…

Ancient Greek debated whether living organisms were composed of endlessly divisible fluid or indivisible subunits. However, this debate was settled and closed with the invention of the microscope which is the required material to understand and observe cells. Let us begin with the ABC’s of the Cell Theory which splits into 3 major parts: All living beings are made up of cells Cells are the basic unit of structure in all organisms All cells come from preexisting cells. To have a deeper…

1.1 Explain the appropriateness of light and electron microscopes for different purposes. Explain the difference between magnification and resolution (2) Magnification is how much you can enlarge an image Resolution is how sharp and clear your microscope can show an image State the resolution that can be achieved by each of the following types of microscope (2) Light microscope. 200nm Transmission electron microscope. 0.5nm Explain the appropriateness of light and electron…

INTRODUCTION A membrane of the cell is the defensive wall that protects, controls and regulate the amount of ions and water that enter and exit it. While some substances, such as, water, can enter and exit the cell through osmosis, others have to be transported more in some systematic ways, such as, packing or transporting different ions through protein molecule. (Flinders (2016)) Knowing the permeability of a cell membrane helps scientists on many circumstances. One of them is how much…

A. The cell membrane is made up of phospholipids, cholesterol, proteins, and carbohydrates. The phospholipids and cholesterol both help create the roof of the cell membrane and they both regulate the fluidity of the cell membrane. The proteins in the cell membrane help provide a structural function, transport function, and signaling function all within the membrane (Yeagle, 1989). The carbohydrates are on the external side of the cell membrane. Also the carbohydrates provide a signaling function…

We learn on the origins of the cell that the theory formulated sais all organisms are composed of cells, and the first living cells was prokaryote and it process the DNA but lack in the nucleus. Fossilized prokaryotes were found in rocks 3.5 billions of years, conditions of the earth were totally different of what it is today, also protocols are cell like structures complete with outer membrane. On the difference between Prokaryotes and Eukaryotes, is that Prokaryotes have smaller cells and…