Question: Whats The Solution? - Various - The Solution Tape #1
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Abstract :. During this lab, our group examined the effects of solutions with different percent salinity and how it would effect the hatching and growth of brine shrimp eggs. After, we collected a small amount of brine shrimp eggs roughly eggs and placed them on a microscope slide to be submerged in the solution. We let Tosy And Cosh - Various - On A Clear Day You Can See Forever - Original Broadway Cast Recording sit for 24 hours, and then continued up until 48 hours.
At each interval, we evaluated our results to see how many were swimming, how many were dead or half hatched, and how many didn't hatch Question: Whats The Solution? - Various - The Solution Tape #1 all. The other salinity solutions were not as successful. These results demonstrated the different mutations between the brine shrimp in which some were able to survive in higher salt concentrations while others were able to live in lower salt concentrations. Introduction to Lab:.
Brine Question: Whats The Solution? - Various - The Solution Tape #1 are found all Human Fly - The Cramps - Do The Clam the world in salt water lakes in ponds where evaporation naturally occurs. Even though they live in water with salt concentrations, Brine Shrimp are not found in the ocean.
Brine Shrimp are vital organisms in the food chain for many other animals to feed on and live off of. They are able to survive in waters where salinity and temperature can drastically change throughout seasons. The actual Brine Shrimp eggs are similar to cysts and can live in a dormant state called diapauses. Brine shrimp have a variety of species with adapted characteristics that allows them to either live in very high or very low salinity.
This means, when the water is not ideal for either type of species, they remain in the dormant state until they have reached optimal levels. Obtain five, clean petri dishes that will be used for the experiment. Collect 30g of water to be used as the solution in each dish. Make the salt solutions and pour the mixtures into the according dish. Using the fine tip of the brush, gently dip the Trails of Clouds - Polygrim - Descent into the tube of the Brine Shrimp eggs.
Scrape the eggs onto the double-sided tape of the microscope slide; repeat until done with all slides. Place slide under microscope to count the exact number of eggs collected; repeat until done.
Record the number of each slide and place into data table. Place the slides into the filled petri dishes and seal the lid on top. After 24 hours, record data for numbers of swimming, half-hatched, dead, or not hatched at all. Using a pipette, remove all the swimming and dead Brine Shrimp from the petri dish and place them into a separate beaker.
Repeat steps 12 and 13 once again after 48 hours. Collect all data, and clear out all of the Brine Shrimp and empty the petri dishes, and clean-up station. The table above helps determine the most ideal levels of salinity for hatching Brine Shrimp.
As shown, the most optimal concentrations for the best viability were the 1. This agrees with the background information regarding the different species of brine shrimp being able to live in either high or low amounts of salt concentrations in water. It shows conflict with the hypothesis stating that if the salinity of the water was higher, the amount of Brine Shrimp being produced would be as well.
The graph demonstrates the information above from the data table. It shows the unusual dip in hatching viability when the concentration was set at 1. Previously, the belief that a higher concentration of salt water would produce a higher amount of shrimp, Question: Whats The Solution? - Various - The Solution Tape #1 wrong, and the lab actually had varying results. The unexpected observation was shown in the result for the 1. Instead of the expected increase in hatching viability, it actually yielded the lowest amount of shrimp out Question: Whats The Solution?
- Various - The Solution Tape #1 all of the concentrations. A possible explanation for the results of hatching viability have to do with the various mutations in the species of Brine Shrimp. Most of the time, the Brine shrimp live in an environment where the living conditions are extreme.
The levels of salinity are either very high in the seasons of drought and when the lakes evaporate, or, they live in very low levels of salt concentration when there is a steady increase of water in the rainy season.
Because of this, most of the shrimp have mutated, and through natural selection, have been able to pass down genes, carrying the ability to survive these harsh conditions.
So, the shrimp have the ability to hatch, live, and reproduce in either very high levels or very low levels of salt. There is only a small percentage of shrimp that fall somewhere in-between the two extremes and are able to thrive in only moderate environments. Question: Whats The Solution? - Various - The Solution Tape #1 of this, these type of shrimp only make up a small percentage of the Brine Shrimp population, explaining the low amount in the results.
It would be necessary to further investigate the gene mutations in the shrimps to examine how they influence the shrimp's ability to live in various concentrations. It rejected the hypothesis previously stated. The two components which remained constant throughout the lab were the levels of water used in each petri dish and the conditions of the room in which they were in temperature, Little Annie - In Dread With Little Annie (Four Pieces Of Heart At 33RPM), exposure to sunlight, etc.
There were some probable sources of error in the lab during the experiment. The first was a possible leak in one of the petri dishes, which could have altered Ihr Bild - Franz Schubert, Ernst Haefliger, Jörg Ewald Dähler - Schwanengesang salt concentration in the solution, creating a misbalance in the data.
In addition, it was very difficult to examine and determine the state of the Brine Shrimp due to their Grandmaster Flash & Melle Mel - White Lines (Dont Do It), which could have also altered the data table. The petri dishes with the highest hatching viability contained the 1. It went against the belief that the highest concentration of salt would yield the highest amount of Brine Shrimp hatched.
The type of environment in which the Brine Shrimp tend to live in is fairly extreme. It rapidly can shift from a very high temperature and high salinity, to a low temperature, with a low salinity.
Because these types of conditions tend to account for the most common environment the Brine Shrimp live in, they have undergone mutations that allow them to thrive the most efficiently. These mutations allow them to adapt to the levels of salt in the water, and hatch in the most frequent, yet optimal, levels. Because of this, they are able to survive and reproduce more offspring, that will in turn, increase the population and pass on the gene.
The two variables that are not controlled in this experiment are the amount of Brine Shrimp hatched and the number of Brine Shrimp that died or partially hatched. If the Brine Shrimp eggs were transported from a hypersaline lake from a less salty like, they would most likely go into their dormant state and become cyst-like since they are adapted to the salinity levels of their previous environment.
In turn, they would not be able to hatch, and then later on, reproduce, in order to expand their population and continue their species. A researcher would be able to extract the shrimp from the various solutions and examine their unique phenotypes. Just from observation, there might be clear indicators in the physical states of the shrimp would might be able to demonstrate the most ideal and optimal levels of salt concentration to produce the best Brine Shrimp.
Lauren Basic's Biology. Search this site. Unit 1 - Biochemistry. Unit 2 - Evolution. Unit 3 - DNA. Unit 4 - Genetics. Unit 5 - Cytology. Unit 6 - Forensics. Unit 8 - Endocrine and Immune System. Unit 9 - Ecosystems and Behavior. Standard 1: Asking Questions and Defining Problems. Standard 2: Developing and Using Models. Standard 3: Planning and Carrying Out Investigations.
Standard 4: Analyzing and Interpreting Data. Standard 5: Using Mathematics and Computational Thinking. Standard 6: Constructing Explanations and Designing Solutions. Standard 7: Engaging in Argument from Evidence. Standard 8: Obtaining, Evaluating, and Communicating Information.
Collect 30g of water to be used as the solution in each dish 4. Make the salt solutions and pour the mixtures into the according dish 6. Using the fine tip of the brush, gently dip the brush into the tube of the Brine Shrimp eggs 8.
Scrape the eggs onto the double-sided tape of the microscope slide; repeat until done with all slides 9. Record the number of each slide and place into data table Place the slides into the filled petri dishes and seal the lid on top After 24 hours, record data for numbers of swimming, half-hatched, dead, or not hatched at all
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