Osmosis of a Turnip and a Potato Chip
The problem:
I have been asked to investigate why a turnip will taste sweeter than
a potato chip. What I am actually been asked to investigate is the
effect of varying concentration of a certain sugar solution on the
amount of osmotic activity between the solution and a potato chip of a
given size.
Background Knowledge:
Osmosis is a special type of diffusion involving the movement of water
molecules through a partially permeable membrane and is defined as the
movement of water or any other solution from a high concentration to a
low one through a semi permeable membrane e.g. cell wall. This could
be a cell wall that will allow small molecules to pass through it but
not large ones. For example if pure water and a strong sugar solution
are separated by a membrane then osmosis will
occur.
[IMAGE][IMAGE][IMAGE]
Large molecule
(Sugar molecule) Small molecule
(Water)
This shows osmosis in action. The water molecules can move in any
direction through the membrane. Because there is a higher
concentration of water on the right, there will be most movement of
water to the left.
[IMAGE]
The movement of water will stop when the concentration of water on
either side is even. The water molecules have moved through the
membrane until there is the same concentration on either side.
The potato is the storage part of the plant and so this is where the
glucose will be stored.
Prediction:
From the background knowledge and previous experiments completed I
predict that the turnip will taste sweeter than the potato because
there is a higher concentration of sugar molecules in the turnip.
If we say that the right hand side in picture 1 is the potato, and the
is put in pure water it will become turgid and it will not burst due
Investigate the Osmosis of Potato Cells in Various Salt Solutions. Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable is the concentration of the solution.
I am going to carry out an experiment to measure the change in mass of
Type of tissue- this will be controlled by using only one type of tissue, which is the potato
At point C (highest sucrose - lowest water concentration), there is no indication that the cell is decreasing further in mass. This is because the potato has become flaccid and no more water can leave the cell. The potato is said to be plasmolysed.
Osmosis in Carrots Background Osmosis is the diffusion of water from a dilute solution to a more concentrated solution through a partially permeable membrane, which allows the pass of water molecules but not solute molecules. [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE]If a cell is placed in a less concentrated solution water enters because the less concentrated solution will have a high concentration of water than the inside of the cell. Once the cell takes in maximum water the cell becomes turgid. If the cell was to be placed in a high concentrated solution, water would leave the cell because the cell would contain a low concentrated solution. So in the low concentrated solution there will be a high concentration of water and in the high concentrated solution there will be a low concentration of water.
When I am not using them I will place them away from my experiment and
Domesticated potatoes were once all belong to one botanical species, Solanum tuberosum; it included thousands of varieties that had diversity in size, shape, color and other characteristics. The potato was first domesticated in the South America Andes, then the Puritans who took Mayflower arrived the land and the First Nations taught them about potatoes. Then the sailors went back to Europe and people started to plant potatoes in Spain, England, France, and many other countries in Europe. Later, potatoes were spread into Africa by the colonists. The crop was once believe to be poisonous by the local farmers who refused to plant them. However, the colonists persuaded the farmers and introduced potatoes as a low-price and high-production crop in substitute of wheat and rice.
Investigating Osmosis In A Potato Introduction: "Osmosis is typically defines as the flow of one constituent of a solution through a membrane while the other constituents are blocked and unable to pass through the membrane. Experimentation is necessary to determine which membranes permit selective flow, or osmosis, because not all membranes act in this way. Many membranes allow all or none of the constituents of a solution to pass through; only a few allow a selective flow. In a classic demonstration of osmosis, a vertical tube containing a solution of sugar, with its lower end closed off by a semi-permeable membrane, is placed in a container of water. As the water passes through the membrane into the tube, the level of sugar solution in the tube visibly rises.
Osmosis in Potato Tubes Osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a high concentration to a low concentration. Diagram: [IMAGE] [IMAGE] Aim: To see the effects of different concentration of sugar solution on Osmosis in potato tubes. Key factor: In the investigation we change the sugar solution from: 0%-10%-20%-30%-40%-50% this is the independent variable; the dependant variable is the change in mass. Prediction: I predict that all the potato tubes in pure water or low concentration sugar solution will swell because water enters their cells by osmosis.
Potatoes after being removed from storage they are placed in specially made perforated bags designed for retaining moisture and air circulation. Majority of potatoes harvests are distributed to fast food companies or snack food companies where they are cooked into things like french fries or chips. But the remaining number is split up into three points the bigger chunk of the potatoes going to grocery stores for people to buy for cooking. The other chunk is distributed to restaurants for use in their dishes. The other chunk is distributed to livestock farms where the product is used to feed the livestock. Potatoes are a staple crop just like corn, sugar, and flour, meaning it is a product that is used often by consumers, which makes the distribution of the potato a profitable
water in the potato, then the water will go out of the potato and into
When we are hungry, no, starving, it grows even in the rockiest and inhospitable soil. It never lets us down, unlike our group members, I mean public transportation system. Potatoes are so simple and effortless to grow, compared to the delicate tomatoes that require artificial supports, just to keep them from falling over, or the grapes in Napa Valley that need classical music to grow. Growing potatoes also don’t require special care or tools. All they need is to be somewhere underground, and where water can reach them.
The sheer volume of tubers at harvest is nearly 20 million tons of potatoes which puts considerable pressure on existing marketing infrastructure. It absorbs supplies coming out of the field over a period of 8 to 10 weeks. Potato cultivation is the most dynamic sectors of the Indian agricultural economy since 1960. Indo-Gangetic plain is the area where more than 80% of Indian potatoes are produced that has seen rapid growth in horticultural production in the past decade. Potatoes produced in the plains are grown as a winter crop