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Essay on Cell Theory

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Plant And Animal Cell Membranes

A cell may be defined as the basic unit that supports life. Organisms are usually made up of one or several cells. The cell membrane, or the plasma membrane, is common to all cells. The membrane is a thin and fragile structure, usually between 5 to 10 nm (nanometer) wide that separate cells from the surrounding environment. Because the plasma membrane is extremely thin, no hint may be detected when a cell section is investigated under a light microscope. It…...

The Effect of Temperature on Beetroot’s Cells Membrane

Introduction: Beetroot Beetroot is one of many type of beets known as Beta Vulgaris. It can be used in cooking and drinking as it is one of the source of vitamins, minerals, nutrients and antioxidant as well including magnesium, potassium, sodium and vitamin C and betaine. Betaine in the cells serve as organic osmolytes which are synthesized or taken from the surroundings by the cells for protection against osmotic stress, drought and high temperature. It is also important for cardiovascular…...

Gram Staining

The Gram stain is an useful stain for recognizing and categorizing germs. The Gram stain is a differential stain that enables you to classify germs as either gram positive or gram unfavorable. This gram stain technique was discovered by Hans Christina Gram in 1884. The gram stain procedure separates all bacteria into one of two groups - into gram-negative germs which do not stain purple and into gram-positive cells which does stain purple. Bacteria that decolorize quickly are called gram-negative,…...

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Cells Size Research

This research assignment will discuss why cells are usually microscopic in size, given that they need to be able to exchange material with their surrounding environment. The cell is highly organised with many functional units or organelles (Spurger).A membrane is a fluid mosaic which consists of proteins, lipids and carbohydrates which seperates the cell from it's surrounding environment or subdivides a cell into specialised regions or compartments (Watters). The membrane is specialised in that it contains the specific proteins and…...

Germs: Bacteria, Viruses, Fungi, and Protozoa

A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to bacteria and archaea. Characteristics: Like living organisms, viruses contain nucleic acids and proteins. Inside living cells, viruses can reproduce, but not by the process of mitosis like most living cells. Viruses lack some characteristics of living organisms. Outside of living cells, viruses are not alive. Structure/Shape: A virus structure can…...

Bacterial Transformation Lab Report

Introduction In this lab, the goal was to transform the bacteria e-coli to glow in the dark (or under a black light). Four plates were set up with agar in them for the bacteria to feed on and grow. Changes were then made to the bacteria. One plate was the control plate, having only the LB or agar for the bacteria and negative pGLO, which is the liquid not containing the plasmid. This is the plate that was compared with…...

Cell Analogy of a Mall

Cell Membrane – The cell membrane protects the inside of the cell from outside containments, keeps the cell in contact and maintains its shape. This relates to mall security guards. They’re job is to protect the mall, make sure everything is intact and everybody is safe. Without the cell membrane, containments could enter, the security guards do the same. Without them, bad people or things could happen in the mall. Cell Wall – The cell wall provides structural support and…...

Cell Theory

In biology, cell theory is a scientific theory that describes the properties of cells, the basic unit of structure in every living thing. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory states that new cells are formed from pre-existing cells, and that the cell is a fundamental unit of structure, function and organization in all living organisms. It is one of…...

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