Cell wall

Sort By:
Decent Essays
Good Essays
Better Essays
Amazing Essays
Best Essays
    Page 1 of 50 - About 500 Essays
  • Decent Essays

    Structure of the Bacterial Cell Wall Bacterial cells differ from mammalian cells due to highly developed cell walls outside the cytoplasmic membranes that provide structural integrity and shape to the cell. Bacteria live in dilute aqueous environments, which causes an intracellular pressure equivalent of 10-25 atm. Without the structural support of the cell wall, the cell is susceptible to lysis and osmotic rupture due to osmotic rupture due to turgor pressure. Figure 1: Comparison between gram-positive bacterial cell walls and gram-negative bacterial cell walls. Structural differences in the bacterial cell walls cause bacteria to be subcategorized into gram-positive and gram-negative. Gram-positive cell walls (e.g. Bacillus subtilis, Streptococcus…

    • 990 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    out of cells can also be due to active transports that use energy from ATP to move substances through the cell membrane against the concentration gradient, from regions of low concentration of that substance into regions of higher concentration. In this part of the lab, the students will examine the diffusion of solute through dialysis tubing, a selectively permeable membrane, to observe why the size of the pores in the dialysis tubing determines which substances can pass through the membrane.…

    • 727 Words
    • 3 Pages
    Decent Essays
  • Decent Essays

    and some algal cell walls, in bacteria and in the exoskeleton of invertebrates (Li and Roseman 2004). Lipochitooligosaccharides or Nod factors produced by rhizobia essentially consist of a chitin backbone of 3–5-N-acetylglucosamine residues with N-acyl group attached to the non-reducing sugar and a variety of additional substituents attached to the glucosamine residues (den Hartog et al. 2003). Bacterial peptidoglycan, a polymer of β-1,4-linked N-acetylglucosamine and N-acetylmuramic acid…

    • 959 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Linezolid Research Paper

    • 290 Words
    • 2 Pages

    The antibacterial consequence possesses a mechanism of action comparable to penicillins i.e. inhibition of transpeptidation course resulting in the arrangement of inadequate cell wall; osmotic impel from the outside isotonic environment of the host cell to the inside of the hypertonic bacterial cytoplasm and finally activation of the autolysin enzyme leading to the lysis of bacteria 3. Cefixime is used to treat positive infection caused by bacteria such as bronchitis (infection of the airway…

    • 290 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    Biological functions: The main biological functions for CRP to determine via its ability to identify pathogens and injured cells of the host and mediate their elimination via activating the complement system and phagocytic cells (Brundish and Baddiley,1968 ; Weiser et al., 1997). CRP binds to microorganisms and mediates their killing to more recent observations of protection against bacterial pathogens in CRP transgenic mice. The most significant evidence has supported the notion that CRP plays…

    • 1133 Words
    • 5 Pages
    Decent Essays
  • Good Essays

    Mucor Hiemalis

    • 1700 Words
    • 7 Pages

    also the growth was stimulated with several concentrations of lead. The maximum growth was recorded in 100 ppm. High concentrations slightly inhibited the fungal growth (Table 40, Fig. 50). Low concentrations of iron (1 ppm - 30 ppm) stimulated the fungus growth. Incrasing iron concentration inhibited the fungal growth to stop it completely with 300 ppm iron (Table 40, Fig. 50). Rome and Gadd, (1987) studied the ability of P. italicum to remove copper from aqueous solution. Heavy metal uptake by…

    • 1700 Words
    • 7 Pages
    Good Essays
  • Decent Essays

    arise. A xylem is one of two types of complex vascular tissue that originate from the procambium. The xylem resides in the root and its role within plant is to conduct water and minerals. It is composed of two types of sclerenchyma conducting cells, tracheids and vessel elements, as these trachery elements mature they go through anatomical changes, most noticeably, elongation. As Xylem tissue further mature the formation of a secondary, water impermeable wall is formed through secretion. This…

    • 952 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    because they are large and are composed of thousands of atoms. Each organic molecule consists of a monomer and is created with certain elements. Without these vital organic molecules the cell would not function properly and the cell would not be able to achieve essential processes that helps the survival of the cell. Macromolecules help sustain life.…

    • 722 Words
    • 3 Pages
    Decent Essays
  • Decent Essays

    Pectinase is one of the widely used enzymes in the food and enzyme industry. It is an enzyme group that comprises polymethylgalacturonase (PMG), polygalacturonase (PG), and pectin lysase. These enzymes are used in degradation of pectic substances, which involves deesterification and depolymerization reactions. Pectic substances are the major structural component found in plant’s cell wall and lamellae. Types of pectic substances include protopectin, pectin, pectinic acid, pectic acid and…

    • 964 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    This is to prevent the growth of microbial contamination and also to prolong the food’s shelf life. Moisture loss observed in potatoes is because of the intracellular spaces contain in its structure or its porosity. A study conducted by Wang. N and Brennan. J (1993), stated that there was a linear relationship between porosity and moisture content. According to Singh. F et. al (2014), one of the most significant effects on the porosity in potatoes is by the dehydration process. The removal of…

    • 1213 Words
    • 5 Pages
    Decent Essays
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50

Related Topics:

Popular Topics: