LABORATORY REPORT EXERCISE #5 INTRODUCTION TO THE COMPOUND LIGHT MICROSCOPE, PLANT AND ANIMAL CELLS Name_______________________________Section_____Teacher______________Date________ PRE-LAB QUESTIONS - answer the following questions using your textbook and valid internet sources. Be sure to cite your sources at the end of the prelab. You can type your answers to all questions except #1 and #9 directly into this document and then submit via Canvas. Type the answers for #1 and #9 at the end of the document. 1.
Since the production of light requires a large amount of energy expenditure, Vibrio fischeri uses quorum sensing to regulate its gene expression after detecting changes in extracellular density[2]. Quorum sensing is used by both Gram-positive and Gram-negative bacterium [2]. Lux R and lux I are genes encoding proteins that regulates light production[1].Aliivibrio fischeri also forms a symbiotic relationship with animal hosts[3]. Aliivibrio fischeri utilizes the nutrients provided by its host to emit light that is later used by the host for various purposes[3]. The light emitting reaction of Aliivibrio fischeri is catalyzed by
Cyanobacteria are able to absorb light at both short and long wavelengths whereas Chlorobi can only absorb light at long wavelengths. In the reaction center of cyanobacteria, oxygen is produced whereas the reaction center of Chlorobi does not generate oxygen. How do Green Bacteria overcome the low light conditions at which they are often found? Green bacteria have large chlorosomes which are composed of bacteriochlorophyll and carotenoids. These pigments are responsible for absorbing light at long wavelengths.
These microorganisms are used to teach us how multicellular organisms came to be and how they can survive today. These small, microscopic organisms are so unique that the identification of them is paramount in the advancements of science. Knowing the chemical makeup, the shape, and the biochemical processes is important in identifying these organisms to understand how they survive and where. A number of tests can be ran on an unknown bacteria to determine their ideal
Most Cyanobacteria, like the ones in the model, are capable of nitrogen fixation. In order to fuel their growth cyanobacteria, rely on fixed forms of nitrogen such as ammonia and nitrate. Cyanobacteria tends to become very abundant in warm, shallow, undisturbed surface water. These conditions allow for them to form blooms that produce surface scum. They can also produce a toxin called microcystins that makes the water unsafe for consumption.
It is covered with thousands of photophores that are light-emitting organs and can blink
Lynn Margulis is famous for discovering primary proponent in the symbiosis in biological evolution. Her “serial endosymbiotic theory of eukaryotic cell development revolutionized the modern concept of how life arose on earth” was her discovery on cells. In the 1960’s Lynn studied the structure of cells such as the mitochondria and chloroplasts. She found that the chloroplast DNA was alike to the genes in the algaes nuclei. “Algae have swallowed up bacterial partners, and have themselves been included within other single cells.
Usually around the coast and marine habitat. The chemicals that react to make these light is luciferin, a light emitter. This chemical is either acquired through the food chain or produced within the organism. There are about six
According to Wacquant in “Deadly Symbiosis” a most of the remaining institutions in the Hyper Ghetto are example of the prisonization of the Ghetto. On the other hand, Jameson in “Realism and Utopia in the Wire,” the Wire, though primary a realistic drama, has many moments where Utopian (hopeful and rich in possibilities) developments emerge, although these moments are often only relatively short lived. Wacquant talk about in the “Deadly Symbiosis”, this is the connection between what he refers to is the Hypo-ghetto. He’s talk about the prison deadly symbiosis and phrase is the hypo-ghetto beginning to look more like prison and there another side to that prison begin to look more like the hypo-ghetto.
Chlamydia Chlamydia is a sexually transmitted disease caused by a bacterium called Chlamydia trachomatis. Not all people contaminated with chlamydia have symptoms, so the infection can go unnoticed for many years. Patients with asymptomatic chlamydia become permanent sources of contamination, which is why chlamydia is the most common STD in the world. Whoever transmits chlamydia may not know that it is contaminated and whoever gets contaminated may not know who infected it.
The primary purpose of a back support or back brace depends heavily upon the person wearing it. Back braces can prevent pain or injury, reduce pain or aid in the healing of an injury or the site of a spinal operation. Lumbar supports can serve a number of different purposes as well, reducing back pain or preventing injuries in people who are required to lift heavy objects. There are several different types of supports designed specifically for the lumbar region, including the lumbosacral corset, sacroiliac belt and the lumbosacral belt. Choosing the right one is important in getting the most out of what these braces and supports are designed to accomplish.
The Slime molds move through a process called “cytoplasmic streaming” at a rate of one centimetre per hour ("Introduction to the "Slime Molds"", n.d.) ("Plasmodial Slime Moulds",
Cycads have a special symbiotic relationship with certain groups of bacteria one of which is called Anabaena (Arens). They provide this bacterium (which is photosynthetic) with shelter and stability while allowing it to get the sunlight it needs (Arens). Cycads are able to do this because of specialized roots that protrude from the earth called coralloid roots (because they resemble coral) (Arens). In return for their cozy home, the bacteria provide the cycad with some of the nitrogen that it needs to grow (Arens).
Sarcoidosis, an inflammatory disease that can affect the many organs in the human body. Granulomas starts to develop due to sarcoidosis, which is made up of little tumors. This disease is more likely to occur in African Americans than any other race out there. Also more commonly found in more African American women rather than men. This disease can cause great pain to the ones who have it, though it is not life threatening.
According to the theory, organic compounds were synthesis nonbiologically via ultraviolet light, made possible due to the lack of an ozone shield, allowing for light to penetrate the upper layers of the ocean surface (Haldane, 1929. , Oparin,
