Membrane potential

It is expected that if the concentration of sucrose increases from 0.0 M, 0.2 M, 0.4 M, 0.6 M and 0.8 M (±0.01 g) in a 40 (±0.5) mL sucrose solution, then the average percent change in mass in Solanum tuberosum core will decrease. This is because if the Solanum tuberosum cores are placed in a hypotonic sucrose solution, which is described as having lower osmolarity, than the percent change in mass of the Solanum tuberosum core will increase due to the fact that water molecules will be moving…

one normal and one cystic fibrosis, and two cystic fibrosis, each affect the membrane proteins involved in transporting chloride ions through the cell membrane. Two normal genes would not alter whether or not the membrane proteins would correctly shield the chloride ions so that the ions could pass through the cell membrane. With this ability of the chloride ions successfully transporting across the cell membrane the body would not generate a thick mucus on the linings of the organs and…

The results of this experiment show that as the sucrose concentration of the potatoes increases, the potato appearance, shape, and flexibility increase. The qualitative observations show the flexibility of each potato before and after the incubation. The initial observations for the potato slivers were slightly stiff and high in flexibility. After leaving the 10 mL sucrose concentration solution for 45 minutes, the results show an increase in appearance, and flexibility of each individual potato…

When Kevlar is spun, the resulting fiber has a tensile strength of about 3,620 MPa,[13] and a relative density of 1.44. The polymer owes its high strength to the many inter-chain bonds. These inter-molecular hydrogen bonds form between the carbonyl groups and NH centers. Additional strength is derived from aromatic stacking interactions between adjacent strands. These interactions have a greater influence on Kevlar than the van der Waals interactions and chain length that typically influence the…

include the cell membrane, cytoplasm, nuclear membrane, nucleus, ribosomes, mitochondria, small vacuoles, lysosomes, endoplasmic reticulum, and the golgi apparatus. We compared all of these organelles to a plastic bag, a toy animal, a large toy bear head, a highlighter, a noise maker, a medicine cup, a candle, a straw, and a box. To begin, a cell membrane controls movement in and out of the cell. It is a thin flexible layer that also supports and protects. We compared the cell membrane to a…

Separation of plasma proteins by molecular exclusion chromatography Sebastian Prisacariu 140013826 Introduction The components of blood is broken down into 3 parts. This breakdown is consisted of: Plasma which is a yellowish fluid that helps transport blood cells around the body and contains a small supply off proteins, platelets which are blood clotting agent, red blood cells which is a carry for oxygen and remover off carbon dioxide and white cells which is the bodies defence from infection…

Membrane Self-Assembly Processes: Steps Toward the First Cellular Life by Pierre-Alain Monnard & David W. Deamer Summary: To summarize, early cells must have had a membrane to encapsulate its components and keep them within the cell. This membrane was made up of amphiphiles. This membrane was very permeable and as a result, passive diffusion occurred. Later on this membrane evolved to be a little impermeable as to keep the metabolic reactions and catalysts that drive these reactions within…

Each lectin molecule usually comprises of two or more carbohydrate-combining sites, i.e., they are di- or polyvalent. Concanavalin A (a tetramer protein originally extracted from the jack-bean, Canavalia ensiformis) is a member of the legume lectin family and is a particular lectin that has been observed to be able to agglutinate a multitude of cell types, including myocytes, B-lymphocytes and fibroblasts, but for it to perform this action, it needs the presences of sugars which include mannose…

be skipped in a tissue-specific manner forming the IR isoform A. This contributes to the major functional difference between the two isoforms, such that isoform A has more affinity for IGF-2. (1) Occurrence Insulin receptor occurs in the plasma membrane of a variety of cells in brain (olfactory bulb, hypothalamus, cerebral cortex, cerebellum, hippocampus, neurons, and pituitary lobe), kidney, liver (heapatocytes), heart, lungs (pulmonary alveoli),…

Both, a cell membrane and an exterior of a house, controls what enters and leaves the cell and home, respectively. Their purpose and function: let the needed materials in, expel certain materials from the inside, and keep out particular substances/things. In this way, the cell membrane and a house’s exterior are impressively alike. There are many materials necessary to the cell and home to allow them to run efficiently and smoothly. Glucose is to the cell, as air is to the people of homes.…