Viewing structure in relation to its function holistically we see that the structure of an object defines its function i.e. a table has a flat surface for objects to be placed on it. Just like in biology almost all structures within a cell, molecule or organ play an important role in relation to its function. From the larger sizes, such as tubular organs to smaller in size, for example, microscopic organelles will explore the importance of the structure-function relationship. There are different

Describe the importance of cell membrane, its structure and function Cells are the main components of organization in biology. All cells are surrounded by a cell membrane. The cell membrane is semipermeable; made of smaller molecules that form a porous and flexible composition. The cell membrane is made up of phospholipids that contain a hydrophilic head and a hydrophobic tail. Cholesterol stiffens the membrane by connecting the phospholipids together. Glycolipids signal other molecules and glycoproteins

Describe the structures and functions of the cell wall, cell membrane, and outer membrane. Cell Wall – ultimately provides a cell its structure, shape, and protection from osmotic forces Cell walls are mostly composed of peptidoglycan, which is made of chains of the alternating sugar molecules, N-acetylglucosamine and N-acetylmuramic acid. These chains of sugar molecules are attached to one another with the help of other chains composed of four amino acids called tetrapeptides. There are

the membranes of cells and the organelles they contain control the movement of materials? According to the text, cells are the smallest and most basic unit of life. Cells are organized by the outer cell membrane that separates the watery interior of the cell from the outer environment. Energy is required in order for cells to sustain their functions. One way they may use energy is by conducting photosynthesis to produce chemical energy from sunlight. The membrane systems of cells manage an internal

Task 6 Produce an illustrated article for a magazine that examines E. coli structure, growth conditions and curves and how it colonises a new environment. (M2) Structure E. coli consists of an outer membrane which contains lipopolysaccharides, a periplasmic space with a peptidoglycan layer, and an inner cytoplasmic membrane. Some strains of bacteria are pileated and capable of accepting and transferring plasmid to and from other bacteria and such property enables the E. coli under stress conditions

The bacterium was determined to be Gram- negative rods. The first attempt of gram stain the unknown appeared to look positive and cocci. But, the next day onwards for 4 consecutive days the unknown showed up as a gram- negative gram stain and appeared pink rods. Triple Sugar Iron Agar is a differential medium. It differentiates Gram-negative enteric bacteria based on the ability to reduce sulfur and ferment carbohydrates (lactose, sucrose, and glucose). This is indicated by the formation of acid

and most important test that should be performed on the bacteria is the Gram Stain. This test is a process of using multiple stains to differentiate between Gram Negative and Gram Positive organisms (Microbugz). If a bacterium is Gram Positive the cells will appear purple

Discussion and Conclusion The Gram positive Unk. A-DB was identified to be B. Cereus. This inference was reached though quite a bit of study. Firstly the Gram positive was found to be Bacilli shaped this eliminated the gram negative bacteia and three of the nine possible bacteria, leaveing B. cereus, B. megaterium, B. subtilis, C. diphtheriae, M. phlei and M. smegmatis. A timperature test was proformed so as to eliminate the two bacteria whose optimale temperature is 30°(alt+0176) C or exclude