Osmosis And Diffusion Lab Report

Submitted By xx_v_ii

Words: 455

Pages: 2

Open Document

Hypothesis: The starch and water level will rise as the water particles would have entered the dialysis bag, the iodine will have become clear and the starch filled bag will be white.

Materials:
1 plastic baggie
Corn starch
Iodine
Tap water
Stopwatch
Twist tie or rubber band
Clear drinking glass

Research Question:
What is the difference between osmosis and diffusion?

Experimental Procedure:
1. Place ½ cup of water and 1 tsp of corn starch into the baggie.
2. Seal the baggie and also place the twist tie or rubber band on it as an extra security measure.
3. Fill your drinking glass half full with tap water.
4. Place 8 - 12 drops of iodine in the water.
5. Place the baggie with the corn starch solution in the glass with the iodine solution. Make sure the corn starch solution is submerged in the iodine solution.
6. Wait 15-20 minutes.
7. Remove the baggie from the glass and place it on a paper towel. Do not unseal the baggie.
8. What do you notice about the color of the two solutions?
9. Complete Table 1.

Charts
Solutions
Beginning Color:

Ending Color:
Corn Starch Solution
Clear
White (cloudy)
Iodine Solution
Clear
Blurry

Conclusion: My hypothesis was correct , the data suggests that not all things are able to pass through the membrane. The results are consistent with how the starch turned purple, that led to the conclusion that when iodine and starch come in contact they turn purple. It was apparent that the starch turned purple because when Iodine and Starch meet they make a purple color. As a result of the Iodine particles being small led to the conclusion that it was able to get through the semi-permeable. The process revealed that osmosis occurred in this experiment. The data indicates that not everything is able to diffused or enter in the cell because of the cell membrane. The

Essay about L3 Unit 20 1 Assign

VALUE=2 1.1 Identify the differences between bacteria, viruses, fungi and parasites. Bacteria are living being (single cell micro-organism).They are neither plant or animal and exist in millions. A virus is a small infectious agent that can replicate only inside the living cell of an organism. They are too small to be seen even with a light microscope. It infects all type of organisms from animals…

Words 1295 - Pages 6

A Description Of Chloroplasts

mitochondrion: Chloroplasts are only found in plant cells, they use photosynthesis Mitochondrion are found in both, the use chemicals to breakdown food and convert it into usable compounds They both convert things into energy Cell wall vs plasma membrane: Cell wall is only found in plants, it is rigid and protects the plant cell Cell membrane are in. Oth,bit is semipermeable and flexible Both protect cell and both regulate what goes in and out of the cell Rough vs smooth er: Rough er is speckled…

Words 1052 - Pages 5

Micro Nutrient Research Paper

In this paper, you will learn about my invention, the Micro-Nutrient, a pill that stimulates the effects of eating. The key difference between the Micro-Nutrient pill and eating food normally is that the pill eliminates the added artificial colors and chemicals preservatives that companies use to save money and maximize efficiency. (Brain, 2000) The way that the Micro-Nutrient pill works is that it binds to your cells in your bloodstream in a way that food does not. It will instantly affect your…

Words 883 - Pages 4

Essay on Eliza: Immune System and Hiv Positive Patient

system, is very immune-evasive, forms significant amounts of progeny virus in vivo during the later stages of the disease and can be transmitted during sexual activity. The HIV viral particle is surrounded by a lipid bilayer derived from the host cell membrane during budding. The viral proteins are identified by the prefix gp (glycoprotein) or p (protein) followed by a number indicating the approximate molecular weight in kilo-daltons. The lipid bilayer contains gp 160, gp 120 and gp 41. The gp…

Words 4592 - Pages 19

Essay Causes and Spread of Infection

They need moisture and air to multiply but some can without. A single micro organism can become two in around 20 minutes, this varies on the type of different micro organism. 2.2-Explain the ways an affective agent might enter the body Most people get infections of some sort or another. Infections can enter your body several ways for example breaks…

Words 1446 - Pages 6

Essay about Mineral and Water Function

Minerals come in the form of either macro minerals or micro minerals, macro indicates that the body needs more and micro means the body needs less but is a requirement, and all the minerals need to be balanced within the body which could parallel to a large machine needing oil to operate efficiently. The functions of minerals in the body are to give the body the optimal level of care it needs to operate. Minerals have various functions they help with giving oxygen to the blood, supports the bones…

Words 456 - Pages 2

Infecction Control and Implications for Practice Essay

to the deposition and multiplication of bacteria, and other micro-organisms in tissue or on surfaces of the body with an associated tissue reaction. The four types of micro-organisms are protozoa, bacteria, viruses and fungi. "The world around us contains an assortment of viruses, bacteria, fungi and parasites capable of not only surviving but thriving in our bodies - and potentially causing us great harm" Martini (2001, p129). Micro-organisms are living creatures that can only be seen under a…

Words 2817 - Pages 12

Essay about Understanding Causes of Infection

infection. 1.1 & 1.2 Micro-organism is a general term that describes bacteria, viruses, and some fungi. To enable them to grow and reproduce they need: A. Moisture B. Warmth C. Nutrients D. Time *Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small--individually not more than one single cell--however there are normally millions of them together, for they can multiply really fast.Bacteria are prokaryotes (single cells that do not contain…

Words 1192 - Pages 5

Sample Scheme Of Work

| |micro-organisms and a disease they cause.|virus). |Website BBC Health |disease are caused by damage done to cells by the | | |Define the term infectious disease in terms of micro-organisms | |microorganisms or the poisons (toxins) they produce.| |Understand how micro-organisms…

Words 5122 - Pages 21

Micro-Bubble Fluid Lab Report

3 Analytical Solution We try to simplify the above model and solve it analytically. Since the micro-bubble fluid consist of liquid and bubbles, so it can be assumed as semi-incompressible fluid. Assume that the liquid phase (water) is incompressible in wide ranges of the pressure. i.e. ρ_w=constant . Expanding equation of 19 and rewrite it, we have: {█(ϕ ∂(S_w )/∂t+∇.((u_w ) ⃗ )=0 @ϕ ∂(S_m )/∂t+∇.((u_m ) ⃗ )+1/ρ_m (Dρ_m)/Dt=0…

Words 1337 - Pages 6