pathogen? How is the pathogen grown in the lab? A. Single stranded RNA virus 1.Positive strand virus of the family Flaviviridae 2. Virus enveloped with a lipid membrane. B. Replication grown in serum 1. Original cell isolated from larvae or human sera. 2. Incubation very depending of phase of virus. 3. Acute-phase and convalescent phase serum samples. III. What is the epidemiology for this disease? Who gets the disease? How common is it? A. Mosquito borne viral disease
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§1. Aquatic respiration §A. cell membrane – amoeba‚ paramecium §C. gills – mollusks and arthropods §1. papulae – finger-like dermal branchiae §Eg. Starfish §2. gills exposed to the water §Absence of operculum §Shark‚ salamander larvae and tadpoles §3. gills covered with operculum §Bony fishes §4. external gills §Necturus (mud puppy) §D. skin §Salamander §Eels (absorb oxygen thru skin) §frogs §2. AERIAL RESPIRATION §1. epidermis §Annelids
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tissue-dwelling worms. The worms are transmitted by mosquitoes and other biting insects‚ and can be easily spread by flies as they pass from person to person. Lymphatic filariasis is most common to develop in countries with a tropical climate. The larvae will enter the body when the mosquito bites you and then will travel to the lymphatic system‚ where they mature into adult worms. When the worms turn into adults and are inside your lymphatic system it can cause swelling and scarring of the legs‚
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Ozone Depletion: An Introduction Planet Earth has its own natural sunscreen that shields us from the sun’s damaging ultraviolet radiation. It’s called the ozone layer: a fragile band of gases beginning 15 kilometres above our planet‚ and reaching up to the 40-kilometre level. Human activities have caused a substantial thinning of this protective covering — not only over the North and South Poles‚ but right over our heads. Stopping ozone layer depletion is one of the major challenges facing the
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Nr. 50 July 2009 Climbing beans‚ double yields A lot of beans on a small place: This is the benefit of climbing beans. And they are easy to harvest! The Organic Farmer A large section of the Kenyan population is unable to afford high protein food with adequate proteins‚ such as meat and eggs. This is where beans play a very important part; they are a cheap source of proteins. Unfortunately‚ the production of beans in most parts of the country is declining. The problem is the lack of good seeds
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CHAPTER 5. DISCUSSION 5.1. Water quality The average water temperature and average dissolved oxygen obtained during the experiment has been reported as the optimum range (3-10mg/l) for tilapia growth and yields (Meske‚ 1985). Siddiqui et al. (1989) stated that Oreochromis mossambicus has a low oxygen demand and can survive at low oxygen levels (1-2mg/l). Riche and Garling (2003) reported that dissolved oxygen levels should be maintained above 4.9 mg/l for best growth. The water quality tolerance
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Genetically-modified foods (GM foods) have made a big splash in the news lately. Euro- pean environmental organizations and public interest groups have been actively protest- ing against GM foods for months‚ and recent controversial studies about the effects of genetically-modified corn pollen on monarch butterfly caterpillars1‚2 have brought the issue of genetic engineering to the forefront of the public consciousness in the U.S. In response to the up swelling of public concern‚ the U.S. Food and
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chains‚ where organisms gather energy from other organisms. Why is it beneficial that many predatory fish have larval and juvenile stages that feed at a low trophic level‚ while the adults feed at a tertiary or quaternary trophic level? If the larvae and juveniles feed at a lower trophic level‚ then there is less of a risk for them to be consumed‚ since they are feeding in a more inconspicuous manner. The adults can fend for themselves better‚ and therefore can feed at a high level with larger
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one year. The egg-laying takes place in late August - early September‚ usually in rocky areas exposed to the south. The female lays eggs in the soil within an ootheca that can hold 25 to 55 eggs wrapped in a spongy secretion. The appearance of the larvae takes place in May–June; the first adults appear in July. In certain circumstances this species may develop a tendency to gregariousness with formation of very numerous aggregates‚ potentially harmful to crops. Subspecies[edit]Calliptamus italicus
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into their genetic codes. a. Genetic modification can be done with plants‚ animals‚ or microorganisms. b. The best know example of Genetic modification is the use of B.t genes in corn which produces crystal proteins that are lethal to insect larvae. 2. Organic foods are foods that do not use synthetic materials during production. a. Produce is grown without the use of pesticides‚ synthetic fertilizers‚ sewage sludge‚ genetically modified organisms‚ or ionizing radiation. b. Animals that
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