Essays Tagged: "Surface area"

Vertebrate adaptations for terrestrial Life.

d like to answer that? Aquatic animals use gills, which are outgrowths from the body which increase surface area over which gas exchange can occur. Inside the gills of aquatic animals, the circulatory ...

(3 pages) 73 0 4.7 Feb/1997

Subjects: Science Essays > Biology

Respiration

e space extends into the folds of the inner membrane called cristae which dramatically increase the surface area of the inner membrane. Cristae extend into a dense material called the matrix, an area ...

(4 pages) 148 1 5.0 Jan/1997

Subjects: Science Essays > Biology > Human Biology

This is a rough draft of a full report on insects including motion, respiration, excretion, feeding, internal transportation, parental care, reproduction, and interesting facts.

e that are touching the ground; the yellow legs are being lifted and moved forward.Aquatic motion - Surface walkers, because of their small size, are able to walk on the water surface tension. They ma ... eir small size, are able to walk on the water surface tension. They may use hairs to increase their surface area or wax to make themselves more water repellent. Others use fin shaped wings or legs to ...

(4 pages) 49 0 3.5 Dec/2002

Subjects: Science Essays > Biology

The permability of membranes in beetroot

, then with the 40mm I will split in into four 10mm cylinders using the razor blade to increase the surface area of the beetroot. I did this six times to six cores of beetroot as I am trying the beetr ...

(2 pages) 75 0 4.8 Feb/2003

Subjects: Science Essays > Biology

Beetroot cell membrane permeability experiment

I aim to find out the relationship between the leakage of red pigment from a beetroot cell and the surface area. To do this successfully I will need to alter the surface area of the beetroot cells ac ... anges took place.PREDICTIONFor this experiment I would expect the leakage of dye to increase as the surface area increases and this is based on the knowledge of the formation of membranes. Membranes a ...

(6 pages) 39888 1 4.6 Feb/2003

Subjects: Science Essays > Biology

Investigate and find the relationship between heat loss (of water) and surface area to volume ratio of animals.

To investigate the relationship between surface area : volume ratio and heat loss.INTRODUCTION:The aim of this experiment is to investigate ... aim of this experiment is to investigate and find the relationship between heat loss (of water) and surface area to volume ratio of animals. To investigate this, we are going to use three flasks of di ... re going to use three flasks of different volume (as the equivalent the animals) and thus different surface areas filled with water.BACKGROUND:Surface Area : Volume RatiosWe will be using the followin ...

(4 pages) 32 0 3.4 Apr/2003

Subjects: Science Essays > Chemistry

Chile.

ad 15,498,930 people; 4.3 million of them live in the capital of the country, Santiago. Chile has a surface area of 292,133 square miles.Chile is a very contrast country. It has low coastal Andes Moun ...

(4 pages) 105 2 1.9 May/2003

Subjects: Area & Country Studies Essays

Surface Area to Volume Ratio and the Relation to the Rate of Diffusion.

Surface Area to Volume Ratio and the Relation to the Rate of DiffusionAim and BackgroundThis is an e ... and the Relation to the Rate of DiffusionAim and BackgroundThis is an experiment to examine how the Surface Area / Volume Ratio affects the rate of diffusion and how this relates to the size and shape ... io affects the rate of diffusion and how this relates to the size and shape of living organisms.The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to dif ...

(5 pages) 64853 1 3.0 May/2003

Subjects: Science Essays > Biology

Plant Physiology Mineral Nutrition Laboratory Report.

he root systems of plants, so in a sense plants act as the "miners" of the Earth's crust. The large surface area of roots and their ability to absorb inorganic ions at low concentrations in the soil s ... nt stems and the appearance of the leaves changed. Also, there were changes in the biomass and leaf surface area of most of the specimens. Some plants were more affected than others. The calcium defic ...

(13 pages) 96 0 2.3 Jun/2003

Subjects: Science Essays > Biology > Plant Biology

The Rate Of Reaction Between marble Chips and Hydrochloric Acid.

IntroductionWe are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbon ... in more gas (carbon dioxide) being given off. This is because the small marble chips have a larger surface area. When the large marble chips are added to the hydrochloric acid the rate of reaction wi ... slower resulting in less gas being produced. This is because the large marble chips have a smaller surface area. This means that it will be quicker with the smaller marble chips to produce 100cm3 of ...

(6 pages) 103 1 4.3 Jul/2003

Subjects: Science Essays > Chemistry

The Murray Darling Basin.

eing Mt Kosciusko near Cooma, which is nearly 650 000 ha. The Basin comprises of one seventh of the surface area of Australia, with the Murray alone covering an area of 250 000 kilometres. The Murray ...

(5 pages) 36 0 3.0 Sep/2003

Subjects: Science Essays > Biology

Lunar Bases--Living in Space.

r in the air.The habitable amount of area inside the O'Neill will be around 270km^2. That means the surface area should hold around six million people. The production of agriculture will take place in ... ollution risks. The public service areas and shops will be placed underground and don't take up any surface area needed. Also, underground will be many train stations so people wont need their own for ...

(1 pages) 23 0 2.5 Nov/2003

Subjects: Science Essays > Astronomy

Comparison/contrast playstation.

between these two systems.The Microsoft Xbox is 31cm wide, 27cm deep, and 10cm high. It has a large surface area and is decorated with a variety of different designs. Whereas the dimensions of the Son ...

(2 pages) 167 0 2.3 Nov/2003

Subjects: Businesss Research Papers > Marketing

The Kielder Project - An essay about the Kielder Reservoir, its history and purposes and various effects it had on its surroundings.

million gallons.One and a half million trees were felled to make way for Kielder Water which has a surface area of 1,084 hectares or 2,684 acres making it larger than Lake Ullswater and three-quarter ...

(3 pages) 20 0 4.3 Jan/2004

Subjects: Science Essays > Earth Sciences > Geography

What affect the substrate has on the rate of reaction with the enzyme in potato?

Temperature3. Concentration of substrate4. Concentration of enzyme5. Surface area of potato lumps6. TimeKey VariablesInput variables - concentration of substrate ... ry time but I couldn't get the size of the lumps exactly the same every time. This slight change in surface area could have changed the rate of reaction slightly as shown in collision theory. Also, th ...

(3 pages) 29 0 3.0 Feb/2004

Subjects: Science Essays > Biology

Does WARM water freeze quicker than COLD water!!!

rmal contact argumentThe hot water melts the ice under the tray and when it refreezes there is more surface area in contact with the ice tray. Air is a reasonably bad conductor of heat - water or ice ... the shortest time for freezing was at 35C. This is an extract:"The rate of heat loss from the upper surface is proportional to the temperature. If the surface can be kept at a higher temperature than ...

(2 pages) 21 0 3.7 Feb/2004

Subjects: Science Essays

How would the rate of reaction of Bisodel tablet affected by temperature?

ny factors that could affect the rate of reaction. e.g. Concentration of the solution, temperature, surface area, catalyst, air pressure and stirring, etc. I decided to choose temperature as my changi ... forward result.Detailed MethodMy variables:1)Temperature;2)Volume of acid;3)Concentration of acid;4)Surface area of tablet; and5)Numbers of tabletsAfter my two trial experiments, I decided to use 2M 1 ...

(8 pages) 33 0 3.7 Feb/2004

Subjects: Science Essays > Chemistry

An analysis of immobilised enzymes and suspended enzymes

at the suspended yeast had a much higher and faster reaction rate.This must be due to the increased surface area that the yeast suspension provides, as it can mix and spread out amongst the substrate ... t amongst the substrate much easier and ore efficiently than the immobilised enzyme. This increased surface area provides a higher probability of an enzyme and substrate cumin into contact, and formin ...

(2 pages) 36 0 3.0 Mar/2004

Subjects: Science Essays > Biology

Describe the structure and function of blood and the body fluids - an essay about different components that make up blood.

ining haemoglobin that transports oxygen. They transport the oxygen to cells all over the body. The surface area to volume ratio is very large on the erythrocytes sooxygen can diffuse very quickly int ...

(2 pages) 47 0 3.0 Mar/2004

Subjects: Science Essays > Biology > Human Biology

An Investigation To Discover Whether Or Not There Is A Relationship Between Light Intensity And The Surface Area Of A Leaf.

on is to see whether I can find a definite relationship between the light intensity onto the leaf's surface and the surface area of the leaf.HypothesisI think the light intensity could affect the surf ... could affect the surface area in the following way:·A higher light intensity could make the surface area of the leaf larger.The reason I think a higher light intensity could make the surface a ...

(2 pages) 18 0 3.0 Mar/2004

Subjects: Science Essays > Biology > Plant Biology