Cell

The cell-theory is regarded as one of a scientific and fundamental theory in biology, which describes that all living organisms are composed of cells and have different properties. The theory explains the concepts of what cells are made up of, what their functions are, and how they originate. This theory was developed in the 18th century by three German scientist’s Matthias Schleiden, Theodor Schwann, and Rudoplh Virchow, which was a special contribution to the modern biology. Although cells were

1.1 Cells were discovered in 1665 by Robert Hooke an English Scientist. He designed his own light Compound Microscope to see structures too small to be seen with the naked eye. He first examined a piece of cork obtained from a tree and described the appearance of a honeycomb, made up of tiny boxes. He called these boxes Cells. Cells are the basic unit of life, they are in all living organisms (Plants and Animals), and arise from the division of existing cells. Cells contain information which control

All living cells on this planet fall in one of two categories. They are either going to be a Prokaryote or Eukaryote organism. Prokaryote are simplest and most ancient type of cells. It was the only form of life on Earth for billions of years before eventually giving rise to Eukaryotic cells. This composition will distinguish the differences and similarities between these two major type of cells on Earth. If you examine Prokaryotes and Eukaryotes side by side, you will spot a number

2003 and Matsumoto et al 2000). Liver is composed of parenchymal cells (i.e hepatocytes) performing various functions such as energy synthesis and bile production The non-parenchymal cells of the liver, are represented by 3 cell types— Kupffer cells, liver sinusoidal endothelial cells (LECs) and hepatic stellate cells (HSCs) (Kmiec Z. 2001) 1. Kupffer cells are tissue macrophages which are

Prokaryotic and Eukaryotic There are two basic types of cells, prokaryotic cells and eukaryotic cells. The main difference between eukaryotic and prokaryotic cells is that eukaryotic cells have a nucleus. The nucleus is where cells store their DNA, which is the genetic material. The nucleus is surrounded by a membrane. Prokaryotic cells do not have a nucleus. Instead, their DNA floats around inside the cell. Organisms with prokaryotic cells are called prokaryotes. All prokaryotes are single-celled

Nucleus: The nucleus controls the cell. like the cork of a baseball controls the trajectory and the direction. Mitochondria: The mitochondria makes energy for the cell. The mitochondria is inside the yarn making energy for the ball to move and change speeds. Vacuole:The vacuole holds water or fluids. The vacuole is like the rubber casing because the rubber holds the baseball together. Lysosome:The helps break down food. Like the black rubber casing would break down the impact before it damaged the

Cell Biology By: Jared R. Guevara Period: 7/8A Cells, the basic unit of life as stated by the cell theory first created by Theodor Schwann and Matthias Jakob Schleiden, are what make up most living things. They are the blueprint to all life, and are what make up each and every organism, from a simple bacteria cell to humans and all animals. The Cell has two main types; prokaryotic and eukaryotic. These two types differ in slight ways, which makes them unique to their own organisms. Prokaryotic

Cells and Stem Cells 1. The Typical Animal Cell 2. Vacuole: The Vacuole are used as storage inside the cell. Vacuoles store food, water and nutrients to help keep the cell alive. The vacuole can also store the waste that the cell produces so it doesn’t damage the rest of the cell. Vacuoles are usually made from amino acid and water. Nucleus: The Nucleus acts like the brain in the cell, this is because the Nucleus helps to control the cells reproduction, eating and movement. Nucleolus: The Nucleolus

eukaryotic cell consists of many organelles with distinct parts and functions. The nucleus is the control center for the cell that stores the cell’s genetic material in DNA form. It also has coded instructions for making proteins and other important molecules. On the outside of the cell is the cell wall, which is the strong supporting layer around the cell membrane that is located in some cells. Inside the cell wall is the cell membrane, which is a flexible and thin barrier that surrounds the cell. This

Introduction Cell differentiation is the process that leads generalized cells to change patterns of gene expression and move towards the phenotype of specialized cells. Terminal cell differentiation occurs when a cell reaches its final specialized characteristics, and is usually where the cell permanently ceases division (Alberts et al. 2008). Some cell lines can be used to study differentiation. For instance, the PC-12 cell line differentiates in response to nerve growth factor by extending neuritic