Lipid bilayer

Morphology Influenza is made up of enveloped virions that further made up of eight segmented, single-stranded, negative RNA genomes (Bourmakina and García-Sastre, 2005). Influenza is then broken down further to three categories; A, B, or C, which is determined by the antigenic differences in their structural components nucleoprotein and matrix protein (M1) (Bourmakina and García-Sastre, 2005). Both nucleoproteins and MI proteins are crucial to the survival of the virus. In Influenza A’s RNA,…

membrane which is a bilayer membrane that encloses the contents of the nucleus throughout the lifecycle of the cell. The membrane of the cell is selectively permeable meaning that it only allows certain things to go in and out. The cytoplasm which is surrounded by…

identifying at least two component macromolecules and describing what their basic function is within the membrane. The eukaryotic plasma membrane is a phospholipids bilayer containing proteins and carbohydrates attached to the proteins and sterols. It is a fluid phospholipids bilayer embedded with proteins and glycoprotein. The phospholipids bilayer is arranged in such a manner that they form the center of the membrane. They also contain sterols, which makes the membrane less permeable and helps…

1. Diagram an individual phospholipid and a bilayer of phospholipids. Label the hydrophilic head, and hydrophobic tails in both. 2. Explain the Fluid Mosaic model of the cell membrane and describe the functions of the proteins that are embedded in the membrane. The Fluid Mosaic model of the cell membrane is a hypothesis that describes the phospholipid bilayer and it proteins. It states that the membrane is flexible - fluid - and has various proteins embedded in it - a mosaic. These structures…

experiment was a study of the different properties of a lipid bilayer. We used fluorescent microscopy to study the lateral diffusion of lipids and binding properties biotin and anti-biotin. The effect cholesterol has on the fluidity of the membrane was tested using Fluorescent Recovery After Photobleaching (FRAP). We used a Nikon Eclipse 50i upright fluorescent microscope with a Digital Sight DM-2MBW CCD camera to take images of the bilayer after photobleaching. Using these images we were able…

prepared by mixing 1L of distilled water, 50ml of detergent and 7.5 grams of salt. The solution was headed to 60° Celsius and maintained through the lab. The nuclear membrane is made up of phospholipid bilayer, a thin membrane made up of two-lipid bilayer. The soap detergent dissolves the lipid bilayer on the nucleus and cell membrane releasing DNA. NaCl is used to separate proteins from the DNA. Na= molecules are attracted to the negatively charged phosphate group PO3- causing them to bind…

cytoplasm is about 80% water and usually colorless (4). Eukaryotes only contains the following: Mitochondria are found in both plant and animals cells and are shaped like a rod. A mitochondrion contains outer and inner membranes composed of phospholipid bilayers and proteins (5). The most prominent roles of mitochondria are to produce the energy…

The tertiary structure of the membrane is comprised of a lipid bilayer. The amphiphilic phospholipid molecules create an impermeable membrane through hydrophobic interactions. When organic molecules are placed in a polar environment, an endothermic reaction occurs that decreases the entropy of the system (ΔS). Hydrophobic interactions compensate for the decrease in entropy by “clumping” nonpolar molecules together. The orientation of the lipid tails inward creates a membrane with a nonpolar…

again! Water transport across cell membranes occurs by diffusion and osmosis. The cell‐membrane osmotic water permeability varies from cell to cell, depending on the composition of the lipid bilayer and the presence or absence of water pores. The two main pathways for plasma‐membrane water transport are the lipid bilayer and water‐selective…

For example gases can be easily diffused into the lipid bilayer such as when the body inhales oxygen (O) and carbon dioxide (CO2) when exhaling, this process allows the concentration of oxygen to gradually reduce throughout the body. The molecules will move around the body from higher to lower concentration…