Essays Tagged: "concentrations"
Bio engineering
uttingthem back into the original organism in different combinations.Most biomolecules exist in low concentrations and as complex, mixedpopulations which it is not possible to work efficiently. This p ...
Subjects: Science Essays > Biotechnology
Biology experiment on osmosis for gcse very good got an A* as course work so do not miss out
re is a difference in concentration between the two sides of the membrane. The water moves from low concentrations to high concentrations. That is because the low concentrated area tries to dilute the ... s a change of mass, volume, texture and length.Aim:The aim is to investigate the effects of varying concentrations of a salt solution on the amount of osmotic activity between the solution and a potat ...
Subjects: Science Essays > Biology > Plant Biology
The Colorado River
ples are the Nile and the Tigris-Euphrates rivers whichshow use the relationship between rivers and concentrations of people.However, the Colorado River is not such a good example along mostsegments o ...
Subjects: Science Essays > Earth Sciences > Geography
Osmosis and Diffusion Lab
r. Part IV of the lab was using the same idea as the demonstration, by putting objects in different concentrations of a substance; in this case elodea leaves in salt water. In both cases, the objects ... on of salt water added than did the previous one. The independent variables here were the different concentrations of salt water, and the dependent variables were the size of the cell membrane, affect ...
Subjects: Science Essays > Biochemistry
Biotech
uttingthem back into the original organism in different combinations.Most biomolecules exist in low concentrations and as complex, mixedpopulations which it is not possible to work efficiently. This p ...
Subjects: Science Essays > Biotechnology
The Effect of Concentrations of Starch and Sugar Solutions on Synthetic Semi-Permeable Membranes
Hope you injoy my science project very goodThe Effect of Concentrations of Starch and Sugar Solutions on Synthetic Semi-Permeable MembranesBy: Jamie HardyQue ...
Subjects: Science Essays > Chemistry
Radon
tdoor air. Some of the properties of this gas include being odorless, tasteless, and colorless. The concentrations vary throughout the country depending on the types of rocks that are found in the soi ... ce of elevated radon levels in buildings.(5) Outdoor air contains radon, but it is in extremely low concentrations therefore it is not a health hazard. Some wells contain water that has radon dissolve ...
Subjects: Science Essays > Environmental Science
What happens to sodium thiosulphate when it is added to hydrochloric acid? How does the concentration effect the amount of sulphar produced?
ion of thiosulphate the quiker the reaction becuase there are more particles to react.The different concentrations of thiosulphate must be poored separetly into the conical flask containing 15cm3 of h ...
Subjects: Science Essays > Chemistry
Applications of Silicon
Silicon is an essential element in humans, found in significant concentrations in hair, bone, epidermis and dental enamel. It is also the second most abundant eleme ...
Subjects: Science Essays > Engineering > Manufacturing Engineering
Biology Osmosis
the potato, and the potato will gain weight. And if there is very little different in the two water concentrations, there shouldn´t be such a big change in weight. And if there is a higher conce ... gs aygg ggba ngg kcgg gguk.My theory in this experiment is that, due to the difference in the water concentrations of the two substances, I believe that the weight of the potato will start decreasing ...
Subjects: Science Essays > Biology
Catalase investigation
Trial assessment EnzymesAimThe aim of this experiment is to see the effect of four different concentrations of amylase solution on the breakdown of starch.PredictionAccording to S-cool.co.uk ( ... 2%, 0.1% amylase and record your results.Fair testingAs I am testing the effect on different enzyme concentrations on the breakdown of starch the only thing that I will be changing will be the concent ...
Subjects: Science Essays > Biology
Formaldehyde and all about it.
from 10 to 20 milliliters of concentrated formaldehyde. Formaldehyde is very flammable when in high concentrations. It is also found in small quantities within the human body. 400 liters of Formaldehy ...
Subjects: Science Essays > Chemistry
This is a essay about the harmful effects of marijuana and how they are ruining society today.
he smoke frommarijuana contains similar cancer-causing compounds as tobacco, but sometimes inhigher concentrations. From an article that I read, I found an interesting study thatshows someone who smok ...
Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol
Enzyme on hydrochloric acid and yeast.
reaction by looking at the amount of oxygen given off when a yeast culture b is added to different concentrations of hydrogen peroxideBackground informationAn enzyme is a biological catalyst. They sp ...
Subjects: Science Essays > Biology
Plant Physiology Mineral Nutrition Laboratory Report.
he Earth's crust. The large surface area of roots and their ability to absorb inorganic ions at low concentrations in the soil solution make mineral absorption by plants a very effective process. Afte ... f nutrient solutions to prevent nutrient uptake by roots from producing radical changes in nutrient concentrations and pH of the medium. Also critical, is a sufficient supply of oxygen to the root sys ...
Subjects: Science Essays > Biology > Plant Biology
Plant Growth Hormone Lab Report.
longation, color enhancement of fruit, prevention of leafing, and many other conditions. Very small concentrations of these substances produce major growth changes. All plants produce hormones natural ...
Subjects: Science Essays > Environmental Science
Biology AT1-osmosis in potatoes.
The water passes from a region of high to a region of low concentration, until the two are equal in concentrations of water.If a cell is placed in water or a dilute solution than the cell will take in ...
Subjects: Science Essays > Biology
The problems with our ozone layer today and how to protect it for the future
tective layer from six to thirty miles above the earth's surface. It is explosive and toxic in high concentrations, but is virtually nonexistent at the earth's surface simply because it decomposes on ...
Subjects: Science Essays > Earth Sciences > Oceanography
Biology Practical to study the Osmosis effects of Sucrose solutions of different Molarities upon Plant Cells (Chinese Radish and Potato Chips)
smosis in and out of plant cells across a semi permeable membrane in sucrose solutions of different concentrations. The plant cells used in the experiment are potato and Chinese radish tissues that ar ... be taken:VariablesIndependent Variables: This is the variable that is chosen by the researcher, the concentrations of the solutions were chosen by the person who did the experiment. The independent va ...
Subjects: Science Essays > Biology > Plant Biology
The Use and Abuse of Antibiotics
ling, weakening or inhibiting the growth of infectious organisms such as bacteria. Composed by weak concentrations of chemical substances produced by living organisms such as bacteria (Bacillus) and f ...
Subjects: Science Essays > Biology