Preview

Lipids In Cell Membranes

Good Essays
Open Document
Open Document
564 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Lipids In Cell Membranes
BASIC CHEMISTRY 1. What is the difference between being ionized and being polar? When ionized the atom will either lose or gain electrons. A polarized molecule has an overall neutral charge with positive and negative sides such as H2O. 2. Compare macromolecules to Monomers; complete the chart below Example of a Macromolecule | Corresponding Monomer | polysaccharide | monosaccharide | lipids | glycerol, fatty acid | protein | Amino acids | nucleic acid | necleotides | CARBOHYDRATES 1. List the three main groups of carbohydrates. The three main group of carbohydrates are monosaccharides, disaccharides, and polysaccharides 2. Play the animation of dehydration synthesis. What two monosaccarides did you start with? What …show more content…
Which of the following are also found in the cell membrane: lipids, proteins, or carbohydrates? What is the role of steroids in a cell membrane?

Cell membranes contain all three of the above groups, lipids are found abundantly in cell membranes, steroids are a type of lipids which helps with membrane fluidity by restricting the motion of the fatty acid tails.
PROTEINS
1. Scroll down to proteins. List the six functions of proteins listed. What are the units of a protein and how are they connected? Proteins can be categorized into transport, hormonal, receptor, enzyme, regulatory, and structural proteins. The basic unit of a protein is an amino acid. Amino acids are linked by peptide bonds to form polypeptides. 2. Proteins can be small or large. The larger they get causes them to fold. List the four types of structures in which they can fold. Since they are held in this folded place by hydrogen bonds, what is it called when you heat a protein and ruin its structure? Proteins fold in a primary, secondary, tertiary, and quaternary structure. Each structure is a combination of the ones before it. When these folds are damaged, denaturing

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Levels of Life Worksheet

    • 331 Words
    • 2 Pages

    |Lipid |C, H, and O |Glycerol and fatty acids |Cushion and insulate organs; builds cell |…

    • 331 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    The cell membrane is a barrier to the entry and exit of substances. They are semi-permeable barriers, allowing some substances through but not others. It does this by having some small pores or channels.…

    • 167 Words
    • 1 Page
    Good Essays
  • Good Essays

    1. Lipid solutes (steroids and fatty acids): enter the interior of the cell membrane because of their hydrophobic nature. 2. Molecular oxygen (O2): enter interior of membrane because of their small and nonpolar nature. 3. Inorganic ions: low permeability across membrane, but can diffuse passively through cell membranes at rapid rates due to ion channels. Ion channels allow only passive transport across membranes. They do not bind the ions that pass through them. They are selective in determining which ion can pass. Types include: voltage-gated, stretch-gated, phosphorylation-gated and ligand-gated…

    • 2075 Words
    • 9 Pages
    Good Essays
  • Good Essays

    bob in the fluid bilayer of phospholipids. The proteins also vary in structure and function.…

    • 380 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    |Lipid |C, H, ,and O |Glycerol and fatty acids |Cushion and insulate organs; builds cell |…

    • 542 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Lipids are organic compounds found in all types of plant and animal cells. They always contain carbon, hydrogen and oxygen, however the relative amount of oxygen is less than the amount of carbohydrates in lipids. Lipids are polymers and the long chains of repeating units are joined together in a condensation reaction where water is also produced. The most common types of lipids are triglycerides, phospholipids and waxes. Triglycerides are formed by three fatty acids and glycerol linked together by an ester bond. The three fatty acids that make up the triglyceride bond may be identical but a mixture of fatty acids is possible therefore many different triglycerides structures can be formed and this means that they have a range of functions (1). Saturated fats contain single bonds between carbon atoms and they are usually solid at room temperature. Unsaturated fats such as vegetable oils are liquid at room temperature and have many double bonds between carbon atoms.…

    • 1019 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Lipids are organic compounds which consist of hydrogen oxygen and carbon. When fatty acids are combined together, they form lipids. The energy storage lipids, tri-glycerides, are formed when three fatty acids and bonded together with a molecule of glycerol. The energy for this process is usually undertaken by the body, which will bond together fatty acids and glycerol in order to make tri-glycerides for energy storage in the form of fat.…

    • 419 Words
    • 2 Pages
    Good Essays
  • Better Essays

    The purpose of a cell membrane is to control the transport of substances moving into and out of a cell. The membrane is an extremely thin layer (8 to 10 manometers (nm)) thick, which is partially permeable. It consists mostly of lipids and proteins. The lipids found in cell membranes belong to a class known as triglycerides, so called because they have one molecule of glycerol chemically linked to three molecules of fatty acids. The majority belong to one subgroup of triglycerides known as phospholipids.…

    • 1155 Words
    • 4 Pages
    Better Essays
  • Good Essays

    Phospholipids

    • 1440 Words
    • 6 Pages

    Helps lipids move across cell membranes because soluble in both water and fats such as…

    • 1440 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Lipids may be broadly defined as hydrophobic or amphiphilic small molecules; the amphiphilic nature of some lipids allows them to form structures such as vesicles, liposomes, or membranes in an aqueous environment. Biological lipids originate entirely or in part from two distinct types of biochemical subunits or "building-blocks":ketoacyl and isoprene groups.[4] Using this approach, lipids may be divided into eight categories: fatty acids,glycerolipids, glycerophospholipids, sphingolipids, saccharolipids, and polyketides (derived from condensation of ketoacyl subunits); and sterol lipids and prenol lipids (derived from condensation of isoprene subunits).[4]…

    • 265 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Poem

    • 682 Words
    • 3 Pages

    Lipids function as structural components of cell membranes, source of insulation, and energy storage as well. Lipid molecules are most known for forming basic structures of cell membrane. There are three main types of lipids, triglycerides, phospholipids, and steroids. Triglycerides represent the most concentrated and abundant source of usable energy, when oxidized, large amounts of energy are yielded. They are stored in fat deposits beneath skin and around body organs where they help articulate the body and protect its deeper tissues from the lack of heat and bumps. Triglycerides function as storage from for excess foods. Any type of food consumed excessively needs to be converted to fat and stored. Phospholipids are structural components of cells. Lecithin is a phospholipid that is part of our cell membranes and myelin which provide electrical insulation for nerve impulse transmission. Steroids like cholesterol are another component of cell membranes and a form of cholesterol in the skin that is changed to…

    • 682 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Proteins are macromolecules, consisting of one or more chains of amino acid residues. Proteins perform a vast array of functions within living organisms, including catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in folding of the protein into a specific three-dimensional structure that determines its activity.…

    • 877 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Plasma Membrane

    • 926 Words
    • 4 Pages

    The cell, which is the smallest unit of life, is surrounded by a plasma membrane. The plasma membrane functions somewhat like a wall, as it keeps the internal contents from the external environment. Just like a wall, the membrane is also somewhat permeable, except that the membrane takes a much more active role in determining what is allowed in to the cell and what is kept out. The plasma membrane is a very thin structure, which has some very important tasks. One of the main tasks that it performs is to control the movement of foreign substances in and out of the cell. Herein I will discuss the structure of this membrane and some functions it has as part of the living cell.…

    • 926 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Discuss the structure of the plasma membrane and explain the process of active and passive transport through the membrane.…

    • 435 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Protein serves various functions in the body. The structure of a protein determines its function.…

    • 273 Words
    • 2 Pages
    Good Essays