the choice between an acidic, basic, or neutral environment, would be drawn to the neutral environment.
the choice between an acidic, basic, or neutral environment, would be drawn to the neutral environment.
The rate of respiration in mealworms from the twelve experimental tubes in the light treatment ranged from 0.0489 mL O2/g/hr to 1.1611 mL O2/g/hr. The average rate of respiration was determined to be 0.4034 ± 0.1886 mL O2/g/hr. The rate of respiration in mealworms from the six control tubes of light treatment ranged from 0 mL O2/g/hr to 0.0859 mL O2/g/hr. The average rate of respiration of them was determined to be 0.0208 ± 0.0068 mL O2/g/hr. The CI bars of the experimental tubes and the control tubes in this treatment did not overlap, so they were determined to be significantly different from each other.…
For the first part of the experiment we found that four of the five pill bugs found their way to the leafy environment. However, most of their time was spent in the section of soil. For the second part of the experiment where we tested each of the pill bugs separately, we found that the bugs spent most or all of their time in the soil environment, therefore, composing the answer to the question of their most favored environment.…
A reflux condenser was assembled using a 25-mL round-bottom flask, hot plate, and aluminum block. It was equipped with a drying tube filled with calcium chloride to control vapors. Approximately 2.5 mL of isopentyl alcohol was massed and placed in the round-bottom flask that contained a stir bar. Using the same graduated cylinder, about 3.5 mL of glacial acetic acid was added to the flask. A calibrated Pasteur pipet was used to add 0.5 mL of concentrated sulfuric acid to the flask and the flask was mixed immediately. The flask was connected to the apparatus and covered with aluminum foil to help retain heat. Using rubber tubing, water was circulated into the lower attachment and out the top attachment and the mixture was brought to a boil. After heating under reflux for 60-75 minutes, the flask was removed from the heating source and left to cool down to room temperature. The reaction mixture from the flask was transferred to a culture tube and 5-mL of water was added. Upon addition of water, careful shaking, and occasional venting, the phases separated and the lower aqueous layer was removed and discarded. Using the same procedure as explained above with water, 2.5 mL of aqueous sodium bicarbonate was added and the lower aqueous layer was again removed and discarded. The same procedure was repeated one last time with 2.5 mL of saturated aqueous sodium chloride and the lower aqueous layer was removed and discarded, leaving behind the crude ester. The crude ester was transferred to…
The purpose of doing this lab is that Daphnia are , popularly known as water fleas, are small crustaceans that lin freshwater such as ponds, lakes, and streams. and to see what is the effect of daphnia when the scientists put 15% of ethanol on the heat rate of daphnia. however Daphnia, They serve as an important source of food for fish and other aquatic organisms. Daphnia are excellent organisms to use in bioassays because they are sensitive to changes in water chemistry and are simple and inexpensive to raise in an aquarium. They mature in just a few days, so it does not take long to grow a culture of test organisms.…
We placed the zinc inside the beaker and slowly poured the hydrochloric acid into the beaker. As soon as the acid entered the beaker, there was a sizzling sound and bubbles started to form as we add more of the substance in. When the bubbles were forming, we could see a steam of gas coming out of the beaker. After 10 minutes, we noticed bits of zinc were floating on top of the hydrochloric acid and lining the beaker. I lifted the beaker and felt the bottom and it felt warm, which meant the reaction was still happening. After 20 minutes, we added water into the zinc and hydrochloric acid to stop the reaction and we observed a slight cloudy colour (still clear) forming as we slowly pour the water in the beaker.…
The purpose of this study is to understand the feeding rate of Daphnia magna. D. magna is a species of Daphnia that belongs to the suborder Cladocera (Ebert, 2005). They live in freshwater and feed on small, suspended particles in the water. They are filter feeders. Phyllopods, which are leaf-like appendages, provide a filtering apparatus for the collection of food. These structures beat to produce a constant current of water, allowing particles to be filtered by fine setae on the thoracic legs. The particles are then transferred to their mouth groove to be ingested. D. magna typically feed on planktonic algae (Ebert, 2005). The following experiment uses algae to test what affects the feeding rate of D. magna. The rate of filtration is dependent on multiple factors including temperature, food density, body size, and water pH.…
Daphnia, also known as the water flea are planktonic crustaceans that are found in lakes, ponds, and streams. They received “their common name from their jerky movement through the water” (Clare). They are also “very small, usually 2-5mm long, with an overall shape similar to a kidney bean” (Elenbaas). Daphnia play an important role in the freshwater food chains and serve as food for other freshwater organisms such as fish. They are also commonly used to test for chemical toxicity in water. Since Daphnia have transparent body, it is easier to observe their heart rates, and other visceral organ systems. Its small heart rate is easily visible when viewed under a microscope. A change in its heart rate plays a crucial role in determining whether…
OUTCOME 4.1 Confidentiality is not about keeping secrets , it is about protecting an individual’s right to privacy. My duty is to keep personal info about patient and his family private and only share this info with those who have right to know or when a family member of patient give the permission to share.…
The tardigrade is an eight-legged micro-animal that lives primarily in water. What makes this creature so unique is its ability to survive in seemingly any possible environment, despite the fact that it is not an extremophile. To be specific the tardigrade is able to survive in conditions that no other creature could survive, such as the vacuum of space or temperatures close to absolute zero and some tardigrades are able to withstand temperatures close to 300℉. The reason that these creatures are not extremophiles is because even though they can survive in such harsh conditions, they do not actually thrive in them and as a result are more likely to die the longer they remain in those types of conditions. The same reason Tardigrades are able…
These omnivorous or herbivorous species can be useful in the household aquarium as scavengers, because they eat algae and…
New Deal was introduced in the 1930s by President Franklin D. Roosevelt in which established many programs after the Great Depression. It was made to provide aid to millions of people in the US because of the Great Depression. The New Deal is a success because the programs it created became very effect and made a lot of progress in helping people stood up from the sufferings they went through and start a new life. It created direct and immediate rate relief, and it made a lot of changes such as increasing the employment rate, and decreasing poverty by lowering malnutrition in the country. For that reason, it successfully helped improved many people’s lives and the economy.…
Hippodrome, ancient Greek stadium designed for horse racing and especially chariot racing. Its Roman counterpart was called a circus and is best represented by the Circus Maximus. The typical hippodrome was dug into a hillside and the excavated material used to construct an embankment for supporting seats on the opposite side. In shape the hippodrome was oblong, with one end semicircular and the other square; it thus resembled a U with a closed top. Seats ran in tiers the length of the arena and along the curve, while at the straight end dignitaries occupied seats above the arena’s offices. A low wall called a spina ran most of the length of the stadium and divided the course. The spina was decorated with monuments and had sculptures that could be tilted or removed to keep spectators…
Isopods are decomposers, so their main sources of food are decaying wood and other plants. Other possible sources of food are decaying animals, scat, and live plants. This makes them a possible pest for growing foods, such as strawberries and potatoes, in the garden. When having isopods as pets, easy types of food to feed them can include dead leaves and rotting wood.…
The floating egg experiment – How much salt is needed to make an egg float?…
* Identify and compare the gaseous exchange surfaces in an insect, a fish, a frog and a…