Mucous membrane

Diffusion Across a Plasma Membrane Lab The purpose of this lab was to learn about the permeability of plasma membranes. In this experiment, dialysis tubing was used to simulate the semipermeable plasma membrane of a caterpillar’s intestine. Cooked starch was prepared and mixed with the enzyme amylase to simulate the mixing of the caterpillar’s saliva with a starch/leaf and then placed in the dialysis tubing to simulate the beginning of the digestive process. The enzyme amylase breaks down…

science, it’s said that cell tissue can be permeable, this means that the cell tissue can regulate what fluids or airs travel through the membrane. For a cell to be able to have that kind of attribute, it permits us to conclude that cell tissues contribute significantly in passive transport. Passive transport is the measure of constituents through the cell membrane minus any involvement of energy by the cell. This experiment was done in order to govern how osmosis occurs in two different…

The Effects of Temperature on Cellular Membranes Kean University: Biology 1300 Section 3 Liyet Iran Partners: Paoline Medina, Jennifer Yuen, Christian Gonzalez, D’wan McCrary, Nicole Piscatelli November 12, 2015 Abstract The cell membrane is an essential structure of any cell. It’s the structure that protects and support the cell. To determine whether this structure can withstand hot or cold environment, a beet specimen is put to test. Six consistent cylindrical beet will…

Resting membrane potential is the difference in voltage of the fluids inside a cell and outside a cell and the membrane is said to be polarized. According to the book the value of the resting membrane potential varies from -40 mv to -90 mv in different types of neurons. There are two essential factors that build and generate the resting membrane potential: the differences in the ionic composition of the intracellular and extracellular fluids, and the differential permeability of the plasma…

by their structure they both have a number of features in common but all so lots of differences. The eukaryotic cell has a membrane enclosed organelle called the nucleus. This is where the DNA in the cell can be found. However the prokaryotic cell does not have a nucleus. The DNA in a prokaryotic cell is found in an area of the cell call the nucleoid this has no membrane separating it from the rest of the…

The study of the brain began by mapping structures such as lobes, cortexes, and regions. As modern medicine continues to make advancements so does the understanding of complex processes which take place inside of the human body such as the firing of action potentials in neuronal cells in the brain. The research presented in the paper “High-Fidelity optical reporting of neuronal electrical activity with an ultrafast fluorescent voltage sensor” shows just how far brain mapping has come and how far…

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 are in constant motion. Proposed by Singer and NIcolson in 1972, they asserted that proteins are inserted in the membrane, with the hydrophobic…

lipoproteins, viral pathogens interact with the lipid composition of a membrane to gain entry into a cell. They can gain entry by interacting directly with the lipid component or with the other components usually glycosphingolipids and using them as a receptor.1 Other viruses require a specific lipid composition such as lipid rafts that are rich in cholesterol and take advantage of the clustering of receptors there.1 Attachment to the lipid membrane is advantageous to the virus as endocytosis…

can transport different substances such as water, oxygen and nutrients, without cells nothing living could exist such as us humans as we need our vital organs and the many systems that keep us alive. Dissolved substances must enter through the cell membrane and entre into or out of a cell. Diffusion is what allows this process. Particles diffuse from a high concentrated area to an…

(IV) Porous Ceramics The concept behind nearly inert, micro-porous bioceramics (type2) is the ingrowths of tissue into pores on the surface or throughout the implant. The increased interfacial area between the implant and the tissues result in an increased inertial resistance to movement of the device in the tissue. The interface is established by the living tissue in the pores. This method of attachment is often termed biological fixation. It is capable of withstanding more complex stress…