Dinoflagellate Pyrocystis Osmosis Experiment

• Design a scientific experiment to determine the effect of the variable on the rate of photosynthesis for the organism

Test tube six contained an elodea and was placed in the dark. It was hypothesized that, after a day, the test tube would be yellow in color. Upon observing, the hypothesis was proven correct because test tube six had remained yellow. This is because the elodea was placed in the dark where it could not receive light to photosynthesize and remove carbon dioxide from the

The question that is being asked in this lab is what happens when the egg is put in an acid bath, water bath, then a corn syrup bath. In the acid bath the egg will do something to the shell. The hypothesis that was created for the acid bath is that if the egg is put in the acid bath then the acid will destroy the cell because the acid will eat away at the calcium of the shell. The hypothesis that was created for the water bath then the egg will increase in mass because the water starts to fill the egg. The hypothesis that was created for the cron syp bath is that if the egg is placed in the corn syrup bath the egg will weigh less because the water will leave the egg and corn syrup eats away ah the egg. The

The purpose of this experiment was to observe the light that the Tomopteris emits. They collected Tomopteris from Monterey Bay off the coast of California. They then stimulated the Tomopteris to produce light so that they could observe the light that it produced. The researchers took photos and measured the amount of light that was emitted per Tomopteris. One interesting discovery was a Tomopteris that emits a blue light which is rare since most Tomopteris emit a yellow-orange light. The researchers tried to create explanations as to why this Tomopteris emits blue light. They think that “different protein complements may be responsible for the light in different species”. However, this isn’t their only explanation for this rare blue emitting Tomopteris. The other explanation is that “this could potentially reflect different ecological roles of the two light colors”. Researchers concluded that with further testing the blue-light emitting Tomopteris may be considered a species of their own.

Osmosis is when water passes through a cell membrane, it is also form of a diffusion, which is a form of passive transport. Osmosis will continue to until an equilibrium is reached which is when the solutions are isotonic. This means that the solution has the same amount of solute on both sides. If the solution is hypertonic, it has more solute in the solution. In this situation water will move towards it. if the solution is hypotonic, it has less solute in the solution. Whereas in this situation, water will move out of the solution.

2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

Next, I stated the null (H0) and the alternative (H1) hypothesis for this data. Hypothesis testing involves the careful construction of two statements: the null and alternative. The null hypothesis holds that there will be no observed effect in our experiment. The alternative or experimental hypothesis holds that there will be an observed effect for our experiment. The following hypotheses are formulated below:

Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

2.  Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

The hypothesis in this experiment that will be tested is “ If there is a higher temperature inside the jar,then bigger crystals will form because the heat speeds up reactions.’To figure out if this is correct, the scientist must get the temperature of each of the conditions they will be testing in. This composes

* a. From your initial observations, you suspect that the two beakers contain the same compound. Describe, in general terms, some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound.

The purpose of the experiment was to see if the object was alive. The hypothesis was if the object was alive it would grow in water. After adding water the data recorded indicated that the object had signs of life. The object turned from brown to a green the object grew and became softer. A blunder error could have been made in the process. The object could have been flooded with water because of an incorrect measurement. The hypothesis was supported by the data indicated that the object was alive.

3. If I had to design an experiment to test this hypothesis, what would I do? [and why?] (3 points)

Based on the presented problem above, the hypothesis will be formulated and tested at 0.05 level of significance.

The experiment was conducted in two different days. The materials that are needed for the experiment were dissecting light microscope, water, salt, 4 small beakers, clear mounting tape, petri dishes, Brine Shrimp eggs, fine tip paint brush, tape and marker. On day one, our group labeled the beakers to 0%, 0.5%, 1% and 1.5% first. We measured out 30ml of water to place into small beaker then weight salt solution to 0g, 0.15g, 0.3g and 0.45g to put in the beakers and mixed, respectively. Then, we placed one small square of mounting tape in each petri dish that was marked with different salinity percentages. We put a small amount of eggs on to mounting tape in each petri dish. After that, we counted the number of eggs using dissection microscope,