| | | A) | endoplastic reticulum | | | B) | microtubules | | | C) | cytoplasm | | | D) | mitochondria | | | | | | Feedback: The cell's chemical processes take place in a semifluid material called the cytoplasm. This material provides an ideal environment for organelles because of its fluidity. | | 7 CORRECT | | This shows an example of endoplasmic reticulum. What is the significance of its structure? | | | A) | provides a location for DNA production | | | B) | helps decrease surface area | | | C) | allows selective permeability of cell membrane | | | D) | facilitates breakdown of chemical bonds | | | | | | Feedback: The pleats and folds of the endoplasmic reticulum provides a large surface area where cellular functions, such as breaking chemical bonds, can take place.
What kinds of clinical specimens may yield a mixed flora in bacterial cultures? Oral, Skin, or GI specimens 5. When more than one colony type appears in pure culture, what are the most likely sources of extraneous contamination? Individual colonies can be picked up on the inoculating loop, or straight wire and inoculated in to the fresh agar or brother media References Cowan, M. K. (2012). MICROBIOLOGY: A SYSTEMS APPROACH, THIRD EDITION.
in nature, the bacteria can transfer these plasmids from bacteria to bacteria, transfering those beneficial genes. this mechanism allows bacteria to adapt to new and foreign environments. the continuous resistance of bacteria to antibiotics is due to the transmission of these plasmids. Bio-Rads unique pGLO plasmid encodes the gene for GFP and a gene for resistance the antibiotic ampicillin. pGLO can also control the gene expression of this fluorecent protein.
When a bacteria enters the body it has antigens on its surface that are recognised by the white blood cells. B-Lymphocytes then produce antibodies with complimentary shapes to the antigens, which bind to them. This is important our immune system to work and fight off
Having researched into two antiseptics, I have decided that TCP and Dettol antiseptics were likely to give me some sort of effective data in stopping bacterial growth in which I will have data through my experiment. After having completed my experiment I will be able to identify which antiseptic is the most effective in stopping bacterial growth, providing my client group with the best antiseptic to use within their work place in fighting infections and help within the first aid assistance in the emergency department within the
MEMO To: Carrie Johnson From: Staff Biologist RE: Bacteria The first step in identifying the mystery organism is to know what kingdom it belongs to. It will belong to one of the following kingdoms: animals, plants, archaebacteria, eubacteria, fungi, or protista. Organisms are placed into these categories based on similarities or common characteristics. Some of the characteristics that are used to determine placement are cell type, metabolism, and reproduction. Examine your living organism and determine if it is a bacteria, achaean or a eukaryote.
Write a 400- to 600-word research report (about two double-spaced pages) evaluating the evidence that supports the endosymbiosis hypothesis for the origin of mitochondria and chloroplasts in eukaryotic cells. Provide at least two properly cited references in your research report. The endosymbiosis hypothesis, developed by Margulis (1970), suggests an explanation for the evolutionary origin of organelles, specifically mitochondria and chloroplasts, in eukaryotic cells. The many similarities between mitochondria and chloroplasts led biologists to wonder if they shared a common evolutionary origin, separate from the rest of the cell. These organelles are believed to have been absorbed in early pre-eukaryotic cells and ultimately developed a symbiotic relationship with the host cell over time.
This type uses fermentation to produce useful products to humans by fermenting microorganisms such as: bacteria and yeast. In this world there are five important types of fermentation; microbial cells, microbial enzymes, microbial metabolites, recombinant products, and biotransformation. In industrial fermentation there are many important factors to consider so that the bacteria could ferment. Growth media is one of the main factors we need to consider in this process. Growth media refers to any liquid or gel that will support any microorganisms or cells to grow.
Alpha hemolysis 3. Streptococcus pneumoniae are Gram-positive, lancet-shaped cocci (elongated cocci with a ... sensitive to bacitracin than other beta hemolytic streptococci. 4. the swelling of the capsule surrounding a microorganism after reaction with an antibody; the basis of certain tests for identifying microorganisms; "pneumococcus quellung" 5. capsules provide protection from viruses. they can be slippery to defend themselves from being eaten. Protects the bacteria from phagocytosis allowing the bacteria to stay in the body 6. pure culture 7.
The physiological role of CRP is to bind to phosphocholine expressed on the surface of dead or dying cells (and some types of bacteria) in order to activate the complement system. CRP binds to phosphocholine on microbes and damaged cells and enhances