In this unit we learned about cells. How cells are the smallest unit of life and most important. How all things are made up of cells. How there are two types of cell in life: Prokaryote and Eukaryote. A Prokaryote has no nucleus while a Eukaryote does. We also learned about cell membranes asking the question, "wy are membranes and their characteristics so essential to life. We also leaned about what a cell does. A specializes in making proteins which i essential for our body. What does photosynthesis do? Photosynthesis is process that converts sunlight into energy. This only works for plants and not animals. We also learned why cells are so small. Cells are small do to a process called diffusion. We also learned about a cell wher ethe solvent can take over the solute which is called hypotponic and can explode. In this unit we also learned about cellular respiration.
Thursday, October 27, 2016
Wednesday, October 12, 2016
Egg Diffusion Lab
In this Lab we experimented on an egg. We removed the shell by using vinegar to remove when combining the to in a beaker. Later we drained the vinegar out leaving us with the egg. We put the egg in a different beaker increasing the sugar water in it. The mass and circumference of the egg both dropped significantly. The sugar water being the solute and the egg being the solvent they make the solution.
A cells Internal environment changes as its external environment changes because of a process called diffusion. the vinegar increased the the mass and circumference of the egg making it hypotonic. While the water made the egg even bigger do to the solvent gaining while the solute wasn't. The salt decreased the mass and circumference do to the solvent was leaving while the solute was gaining in the process called hypertonic.
This lab demonstrates a biological principal by diffusion. Diffusion is a process where cells diffuse making the cell smaller or bigger being hypertonic or hypotonic.
Fresh veggies are sprinkled with water to help keep the veggies fresh even when they are out of the ground. The water helps diffuse the veggies cells by increasing the solvent, when they would not sprinkle water the solvent would decrease and only have solute. When a road is icy they put salt on it to increase the solute do to there is too much solvent(ice/water).
Based off of this experiment I would like to experiment what salt would do to a orange overnight or in a week. see if the solute adds to much and the solvent leaves or if the solvent stays and remains the same.
This lab demonstrates a biological principal by diffusion. Diffusion is a process where cells diffuse making the cell smaller or bigger being hypertonic or hypotonic.
Fresh veggies are sprinkled with water to help keep the veggies fresh even when they are out of the ground. The water helps diffuse the veggies cells by increasing the solvent, when they would not sprinkle water the solvent would decrease and only have solute. When a road is icy they put salt on it to increase the solute do to there is too much solvent(ice/water).
Based off of this experiment I would like to experiment what salt would do to a orange overnight or in a week. see if the solute adds to much and the solvent leaves or if the solvent stays and remains the same.
Monday, October 10, 2016
egg macromolecules lab
In this lab we asked the question, can macromolecules be identified in an egg cell. We found that an egg represents a cell. Meaning macromelucules are found int he same area. For the qualitative data we found that egg membrane and egg yolk always turned purple for every test stating that they have protein in them. Meaning that the Macromolecule was present. For the quantitative data we found that the darker the purple the higher the amount of macromolecules that were present. Ig the color did no change at all we noticed there was no macromolecules there. This evidence and data also comes from Mr. Orre's vodacasts for homework and also the CFU's. This data supports our claim because all the data we found we would see if the data was correct or no then collaborate on what rating we would give for the 0-10 macromolecule test.
While our hypothesis was supported by our data, we found out that there could have been errors due to leaving the test tubes in too long leaving the experiment to go over while others were on target. Or since one of our members of our group left early we had to do their part where they left off not knowing where they were. Due to these errors, I would recommend the person to tell us everything they did be for leaving so the other group members would know what to do next time. Also I recommend that the tools to get the test tubed out of the water are easier to use.
This lab was done to demonstrate the macromolecules were present in the negative control (water), the egg membrane, the egg yolk, and the egg white. From this lab I learned the ways to see if the macromolecules were present and why they were present which helps me understand the concept of what macromolecules are in what part of a cell if its the nucleus, membrane etc.
While our hypothesis was supported by our data, we found out that there could have been errors due to leaving the test tubes in too long leaving the experiment to go over while others were on target. Or since one of our members of our group left early we had to do their part where they left off not knowing where they were. Due to these errors, I would recommend the person to tell us everything they did be for leaving so the other group members would know what to do next time. Also I recommend that the tools to get the test tubed out of the water are easier to use.
This lab was done to demonstrate the macromolecules were present in the negative control (water), the egg membrane, the egg yolk, and the egg white. From this lab I learned the ways to see if the macromolecules were present and why they were present which helps me understand the concept of what macromolecules are in what part of a cell if its the nucleus, membrane etc.
Subscribe to:
Posts (Atom)