Endoplasmic reticulum Essays

  • Research Paper Endoplasmic Reticulum

    3186 Words  | 13 Pages

    Summary Endoplasmic reticulum is a eukaryotic organelle that forms interconnected network of cisternae, vesicles and tubules within the cells[1,2]. There are two types of endoplasmic reticulum: rough and smooth endoplasmic reticulum. The rough endoplasmic reticulum is covered with ribosomes in its membrane, these ribosomes are the site of protein synthesis[2]. The ribosome free endoplasmic reticulum also know as smooth endoplasmic reticulum, its functions including lipid synthesis, drug detoxification

  • Skeletons Research Paper

    1664 Words  | 7 Pages

    Cytoskeletons are common for every living organisms present, be it bacteria, archaea, eukaryotes or prokaryotes. It is present in the cytoplasm of a cell and has a very complex network that consists of tubules and filaments that interlink each other1. Cytoskeletons are comprised of three main proteins in eukaryotes and they are usually able to multiply very fast or even disassemble depending on what the cell needs at any given moment.2 The structures of cytoskeletons can differ from one another and

  • Transmembrane Movement Lab Report

    1207 Words  | 5 Pages

    ABSTRACT Transmembrane movements are substantially necessary for cellular level functions in all entities. Understanding a part of this, membrane and passive transport was the study that was conducted during the experimentation. Three types of experiments were completed in order to demonstrate the characteristics of membranes and factors affecting the passive transport in cells. Larger molecules are too large to cross the partially permeable membrane was the result of the first experiment. Second

  • Assignment: Eukaryotic Cells

    1114 Words  | 5 Pages

    Assignment unit 3 1. Unlike prokaryotic cells, eukaryotic cells have: 1) a membrane-bound nucleus; 2) numerous membrane-bound organelles such as the endoplasmic reticulum, Golgi apparatus, chloroplasts, mitochondria, and others; and 3) several, rod-shaped chromosomes. Because a eukaryotic cell’s nucleus is surrounded by a membrane, it is often said to have a “true nucleus.” The word “organelle” means “little organ,” and, as already mentioned, organelles have specialized cellular functions, just

  • Plasma Membrane Lab Report

    712 Words  | 3 Pages

    Introduction The plasma membrane is an outer layer that is formed around the cell. It is composed of phospholipids and proteins and this is structure is crucial to all cells in our bodies. The plasma membrane acts as a border and more importantly is responsible for what is allowed to enter and leave the cell. The ability to allow specific molecules to enter and leave the cell is known as selective permeability and it is the phospholipids that make this unique ability possible. Membrane has a bilayer

  • Carrier Protein Research Paper

    729 Words  | 3 Pages

    There are some integral proteins embedded in the phospholipid bilayer. Carrier protein is one of the integral proteins. The carrier protein provides the passage for the ions or large, polar molecules to move across the cell membrane. Some of the ions or molecules need to make use of the carrier proteins with the help of concentration gradients. Nonetheless, some molecules which are important to human body sometimes need to go against the concentration gradient. There are two types of ways

  • Fibroblast Research Paper

    2301 Words  | 10 Pages

    Fibroblast The fibroblast is the large cell type of the dermis. These cells are responcible for the formation of procollagen and elastic fibers. Procollagen is terminally cleaved by proteolytic enzymes into collagen which aggregates and turned into cross-linked. These tightly cross-linked collagen fibers allow tensile strength and resistance to shear and other mechanical forces.(9,10) Collagen makes up 70% of the weight of the dermis, primarily Type I (85% of the total collagen) and Type III (15%

  • What Is Connective Tissue?

    625 Words  | 3 Pages

    Connective tissue varies widely in appearance and function, but all forms share three basic components which are extracellular protein fibers, specialized cells, and a fluid known as ground substance. The combination of the extracellular fiber and ground substances produces the matrix that surrounds the cells. The functions of connective tissue are to establish a structural framework for the body. Secondly, it transport fluids and dissolved materials. The connective tissue also protect delicate

  • Plasma Membrane Research Paper

    1747 Words  | 7 Pages

    INTRODUCTION The plasma membrane is the boundary between the cell and its environment. It regulates what enters and exits the cell. Cells must maintain an appropriate amount of molecules to function inside them. They must also have a way to keep things out or to allow things to enter. This is the job of the plasma membrane. The plasma membrane is like the guard must inspect those who enter and those who leave to make sure that only the people and things needed in the community are there. A plasma

  • Endocytosis Research Paper

    961 Words  | 4 Pages

    ENDOCYTOSIS Endocytosis is a process by which a small region of the plasma membrane of a cell ivaginates to form a new intracellular vesicle. The plasma membrane ivagination is termed caveolae and the caveolin is a protein which lines the caveolae. The central role of endocytosis is well exhibited in receptor regulation, neurotransmitters and the delivery of drugs and also endocytosis can be in other forms which are pinnocytosis and phagocytosis (Liang et al., 2010). With respect to receptor-mediated

  • Research Paper On Mitochondria

    1193 Words  | 5 Pages

    The mitochondrion is one of the most important organelles in eukaryotic cells. Widely referred to as the 'Powerhouse of the Cell', they are a feature present in all types of eukaryotic organisms including chloroplasts (only present in plants and algae). They are membrane enclosed organelles that consist of a smooth outer double membrane structure, the mitochondrial matrix and the narrow intermembrane space. Inside the mitochondria there are many folds called cristae. The outer membrane has many

  • Ion Channels Research Paper

    863 Words  | 4 Pages

    MED 208 – ASSIGNMENT 1 Avantika Narasimhan 2013M007 1. Define ion channels. Ion channels are proteins present on the cell membrane. They are pore forming and they facilitate the movement of selective or non-selective ions across the cell membrane. 2. Classify ion channels. TYPE DESCRIPTION Voltage gated ion channels They can be opened or closed according to the changes in the membrane potential. Ex: Activation gate of Na+ channel is opened during the upstroke of action potential in depolarization

  • Nucleolus Research Paper

    425 Words  | 2 Pages

    Rough and smooth the endoplasmic reticulum is formed in a chain-link pattern located throughout the nerve cell. The rough endoplasmic reticulum is cover with small ribosomes, giving it a lumpy appearance. Lysosomes: Lysosomes are multiple membrane-enclosed organelles that deconstruct and digest waste within the cell. Any useless

  • Endomembrane System Lab Report

    910 Words  | 4 Pages

    Interdependence of Sub-cellular organelles Introduction Endomembrane system in Protein Synthesis The interior of a eukaryotic cell is packed with membranes so thin that they are totally invisible under the low resolving power of a light microscope. The endomembrane system fills the cell dividing it into compartments, channeling the passage of molecules through the interior of the cell, and providing surfaces for the synthesis of lipids and some proteins. The presence of these membranes in eukaryotic

  • Difference Between Prokaryotes And Eukaryotes

    985 Words  | 4 Pages

    information needed to reproduce. It can be found in eukaryotic cells. B. Endoplasmic reticulum- there are two types, the rough and smooth endoplasmic reticulum. The rough endoplasmic reticulum is involved in synthesizing and packaging proteins for use. It has ribosomes attached to it which is what makes it rough. The smooth endoplasmic reticulum functions as storage for lipids and sterols. Only eukaryotic cells have an endoplasmic reticulum.

  • Peroxisomes Research Paper

    916 Words  | 4 Pages

    Peroxisome Peroxisomes are small vesicles found in the cell which contain digestive enzymes which break down toxic materials found in the cell. These enzymes are oxidative enzymes, such as catalase and urate oxidase. Peroxisomes play a role in digesting fatty acids, alcohol and amino acids, and also synthesises cholesterol. Hydrogen peroxide (H2O2) is produced as a by-product of these integral reactions, which is toxic to the cell. Because of this, the peroxisome breaks down this product down

  • Subcellular Organelles Essay

    1327 Words  | 6 Pages

    A) Explain in detail the subcellular organelles are functioning effectively? Cells are basic structural and functional unit of living organisms. They are either multicellular or unicellular. Arise from pre-existing cells. Cell function as tiny specific factor with individual part that work together. Then what makes is present inside the cell that makes the cell alive and in turn, keeping the organism going? It is definitely the organelles! What are organelles? Organelles are membrane-bound, specialized

  • Mrs Fender Bender

    593 Words  | 3 Pages

    Lysosomes digest the toxins so they can be safely eliminated by the cell. Peroxisomes contain oxidases and catalases that detoxify substances like alcohol and neutralize free radicals. The smooth endoplasmic reticulum (ER) also contains enzymes that detoxify certain drugs (such as alcohol). 3. Mrs. Fender’s jaundice is caused by the accumulation of bilirubin in her blood and tissues. What is the normal fate of bilirubin, and what role does the liver play

  • Diclofenac Case Study

    1140 Words  | 5 Pages DICLOFENAC It is a non-steroidal anti- inflammatory drug (NSAID) used for the treatment of inflammation and can also be used as an analgesic. It is supplied as or contained in medication under a variety of trade names. Inhibition of prostaglandin production is the primary mechanism responsible for its anti-inflammatory, antipyretic, and analgesic action. It also appears to exhibit bacteriostatic activity by inhibiting bacterial DNA synthesis (Bhalaet al., 2013). It also affects the function

  • Examples Of Cell Biology Worksheet

    1443 Words  | 6 Pages

    University of Phoenix Material Cell Biology Worksheet Part I: Foundations of Cell Biology Respond to the prompts in the tables below. Each response should be at least 30 words. Cite any references that you use. Foundations of Chemisty in Biology Prompt Your response Describe an example of a chemical reaction that occurs in the body. A chemical reaction in the body that occurs is in increased metabolites with just about 10 minutes into exercise. If you consistenly exercise scientists believe