For example, Braithwaite stimulated the nociceptors by injecting dilute vinegar or bee venom under the skin of the trout. The fish found these irritating chemicals unpleasant just like a human would. The effects made the fishes gills beat faster, rub the infected area on their tank, lose appetite, and have trouble making decisions.
If there are lower levels of potassium, then the resting membrane potential will be higher than normal and an action potential will be more likely with less stimulation. Less voltage will need to be used. 2. Tetrodotoxin, a toxin found in puffer fish, acts by inhibiting voltage-gated sodium channels. Eating improperly prepared puffer fish sushi can be fatal because of interference with action potential generation.
Freshwater though essential to life, is one of the rarest and most endangered resources on our progressively fragile planet. We need to be worried about the increasing shortage of drinkable water and water pollution on Earth. The government issued a ban on the use of hosepipe at the beginning of summer to reduce water waste. Simple things like changing the basic habits in our homes to cut down on our daily use of water can also help. Environment is the surroundings and influences on living things including humans.
Abstract The purpose of this experiment was to investigate if Artemia salina is a good bioindicator for toxins in their environment used to detect pollution. Brine shrimp have a high tolerance for changes in their environment. Shrimp were exposed to varying concentrations of ethanol to test their tolerance level and determine the viability for the crustaceans. Four petri dishes of each concentration were used, as well as four dishes of a control that only contained brine water. Three hundred brine shrimp were placed in each petri dish for each of the controls and ethanol concentrations.
Phosphates may be effective in such ways but also causes pollution issues in lakes and streams. Enrichment of phosphate can lead to eutrophication of fresh and inshore marine waters, leading to algae bloom because of the excess nutrients. Bacteria consume the algae and a bacterial bloom ensues.
Ashley Baxter Professor D. Nugent- Odasso Speech 1 July 8, 2012 Dopey Fish Purpose Statement: To educate my audience about the impact that the manufacturing and distribution of waste pharmaceuticals has on our water supply. Thesis Statement: - Chemicals used in the pharmaceutical prescriptions are destroying our most precious natural resource; water. Introduction I. Story – The other day I went to get some sushi. I ordered some Tuna and the sushi chef asked me if I wanted extra Prozac with that.
Hydrogen peroxide is used to cure common colds because it can kill bacteria but is used in very few quantities, for too much of the compound may be dangerous to the good bacteria in the skin. It is not frequently used and may not work if the procedure is done after the virus has already spread. A doctor in 1928 called Richard Simmons believed the rhinovirus, which was the virus that caused colds, found entry into the body through the ear or the mouth. By putting hydrogen peroxide in the patients' ears, it can kill any bacteria that is in the ear canal;thus, the virus can be destroyed before it spreads any further throughout the body.
Salt was also considered a “life or death” substance in the medical community, dating back to ancient Egypt. While immensely painful, salt was poured into open cuts as an antibacterial prescription because it was believed to dry out and disinfect the open wounds. It was also used in the times of ancient Greeks, roughly 2,000 years ago, as an expectorant, an anti-inflammatory, a digestive cleanse, and a topical application for skin diseases and lesions; The Romans later expounded the uses to include treatments for earaches, dropsy, and mycosis. However, it was an Arab doctor (Avicenna) who built the foundations of modern medicines when he noted the iodine and iron content found in costal sea salts,
Consequences The most conspicuous effect of cultural eutrophication is the creation of dense blooms of noxious, foul-smelling phytoplankton that reduce water clarity and harm water quality (Figure 2). Algal blooms limit light penetration, reducing growth and causing die-offs of plants in littoral zones while also lowering the success of predators that need light to pursue and catch prey (Lehtiniemi et al. 2005). Furthermore, high rates of photosynthesis associated with eutrophication can deplete dissolved inorganic carbon and raise pH to extreme levels during the day. Elevated pH can in turn ‘blind' organisms that rely on perception of dissolved chemical cues for their survival by impairing their chemosensory abilities (Figure 3) (Turner & Chislock 2010).
For example, tomatoes are injected with fish gene to make a new product with better quality because the components in fish can protect fruit from freezing. Nevertheless, this matter can cause a serious consequence for people who get allergic with fish. Hence, labeling will allow consumers to identify and steer clear of food products that could cause them problems. Last but not least, labeling GM foods