The euryarchaeota which include methane-producers and salt-lovers; and the korarchaeota catch-all group for archaeans about which very little is known. 9. Protists are eukaryotes rather than prokaryotes. Eukaryotes are organisms that have cells that contain a nucleus. Prokaryotes are organisms that have cells that do not have a nucleus.
Paramecium bursaria chauffeurs the algae and in return, the algae shares the food it produces (Palmer). This is essentially what happened with endosymbiosis. Scientists believe mitochondria and chloroplasts originated from larger prokaryotic cells engulfing bacterial cells, whereas most membrane-enclosed organelles, such as the nucleus, ER, and Golgi, likely originated from
Protects the bacteria from phagocytosis allowing the bacteria to stay in the body 6. pure culture 7. It is differential based on hemolysis of the agar. Hemolysis can be wide-narrow band beta, alpha, gamma, or none. 8. candle jar in microbiology is used for anaerobiosis in which a lit candle is placed in an air tight jar and if it went out, it would be because it used up all the available oxygen. 9. any streptococcus capable of hemolyzing erythrocytes, classified as α-hemolytic type, producing a zone of greenish discoloration much smaller than the clear zone produced by
5. List at least three types of bacteria whose names reflect their shapes and arrangements, and state the meaning of each name. Streptococcus (Coccus Shape) this is a spherical bacteria that causes Strep Throat. Lactobacillus (Bacillus Shape) this is a bacteria in the form of a rod that is usually in probiotics Spirillum Pulli (Spirillum Shape) this is a spiral bacteria in rat bite fever Exercise 3: Gram stain 1. What is the function of the iodine solution in the Gram stain?
This paper will focus on one of the clinically significant forms of the Staphylococci family, called Staphylococcus aureus. Staphylococcus aureus is a form of bacteria that is classified under the kingdom of Eubacteria, phylum Firmicutes, and more specifically the Genus of Staphylococcus. There are roughly thirty two species and eight sub species of the Staphylococci family, of which, only three are clinically significant. These three species are significant as they can be distinguished by coagulase production and novobiocin resistance. S. aureus has unique characteristics that cause it to interact with organisms in a manner that can cause pathogenic effects.
Transduction involves transfer of DNA from one bacterium into another via bacteriophages. Conjugation involves transfer of DNA via sexual pilus and requires cell –to-cell contact. DNA fragments that contain resistance genes from resistant donors can then make previously susceptible bacteria express resistance as coded by these newly acquired resistance genes. 7. A plasmid is an independent, circular, self-replicating DNA molecule that carries only a few genes.
Depending on if the cell is an animal cell or a plant cell. | | Cytoskeleton | Cytoskeleton has intercellular proteins that help the cell maintain its shape and with helps with movement. | The word skeleton in Cytoskeleton reminds me of the meaning. | K Key Idea | I Information | M Memory Clue | Ribosomes | Ribosomes are protein builders. | The word Ribosomes remind me of Ribs.
limiting nitrogen source, limiting fermentable carbon source, S. Cervisiae will undergo sporulation producing spores. (1, lecture notes). C. albicans cells assume different growth forms and morhologies depending on environmental conditions. In cultures grown at low temperature and/or pH, e.g below 30 C or pH 4.0 the yeast form is prevalent. Hyphae develop from yeast cells in a response to a number of growth conditions including; temperatures above 34 C in the presence of Serum, in Lees medium at 37 C, in cultures at 37 C and neutral pH, and in the presence of N-acetylglucosamine.
Another significant different between Gram positive and Gram negative organisms is that Gram positive organisms lack outer membrane found in Gram negative. 2) How is the cell wall different from the cell membrane? - Cell wall is a outermost, tough, flexible, and rigid layer of the some
Extremophiles James Hinshaw Extremophiles are organisms that live in environments that are clearly non livable in a humans perspective. There are many types of Extremophiles that exists today, those including the heat-thriving thermophiles to the cold-living psychrophiles which are just some of the creators that make up an entirely new species of life, the Archae. Before scientists were exposed to this new discovery, many believed there were only two types of life, the Eukaryote, and Bacteria. This was later proven false when Carl. R. Woese took one form of an Extremophile and compared its genetic make up to those of Bacteria.