• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The biological significance of carbohydrates in living organisms

Extracts from this document...

Introduction

The biological significance of carbohydrates in living organisms The carbohydrates are a large group of organic compounds, made up of the elements carbon, hydrogen and oxygen. In carbohydrates the ratio of carbon to hydrogen is usually 1:2, as in water (H(2)0). Carbohydrates can basically be divided into two large groups, the sugars and the non-sugars (polysaccharides). The sugars can be further separated into simple sugars, the monosaccharides (e.g. glucose and fructose), and the compound of double sugars, the disaccharides (e.g. sucrose). These, when hydrolyzed, yield monosaccharides. Carbohydrates are extremely important in living organisms. The make up most of plants. Constituting 60 - 90% of the dry mass. Carbohydrates are used in plants as an energy source, as a means of storing energy (as Starch, a polysaccharide). ...read more.

Middle

Wood consists of carbohydrates of the cell walls impregnated with lignin. Some more examples of why carbohydrates are so important in living organisms are: * Lactose, a disaccharide, is present in mammalian milk, so is important in the diet of infants, to ensure healthy growth and development. * Maltose, also a disaccharide is formed by the action of amylase on starch during digestion in animals and during germination of seeds, is used as energy for its relative organism. * Sucrose, a disaccharide also, is found in sugar cane and sugar beet. It can be found in a form which sugars are transported in plants and also as a storage compound in some plants, e.g. ...read more.

Conclusion

Glycogen is important I living organisms as it is an energy storage molecule in animals, where it occurs in liver cells and in muscle tissue. It is also found in the cytoplasm of bacterial cells. Glycogen is well suited to its function, taking up little space and preventing too high a concentration of glucose in the cells. It can be readily hydrolyzed to glucose for use as a respiratory substrate when required. Carbohydrates are very important in living organisms, in a transport structure, without which the products of photosynthesis wouldn't be able to get around the plant. They are also important as food and energy storage in all living organisms. They are also used as a support component in plant's cellulose cell walls, and they are also very important in a healthy balanced diet. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Energy, Respiration & the Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Energy, Respiration & the Environment essays

  1. Marked by a teacher

    Effect of nitrate concentration on the growth of Duckweeds

    5 star(s)

    To increase the reliability of the results 30 replicates were pooled together to allow me to carry out a statistical test, these 30 replicates all started and ended the investigation. The major factors for survival of the plant were controlled as best as possible.

  2. Seed Germination

    passes through the channel ATP synthase and their electrical potential energy is used to make ATP. Copper, in similarity with cytochromes, is used in the process of respiration in the copper protein Plastocyanin. This protein is used for the electron transfer between Photosystem II and Photosystem I which is involved in Non-cyclic photophosphorylation.

  1. the effect of bile concentration on the activity of the enzyme lipase during the ...

    Repeat step 4 another time so that you will have 40cm3 of the 5% bile salts solution in the volumetric flask 6. Using the beaker with distilled water pour the distilled water into the volumetric flask until the solution in the flask reaches the graduation mark 7.

  2. Investigate the effect of bile salt concentration on the digestion of milk by the ...

    This means in the proportional part of the graph the substrate concentration is the limiting factor that determines the gradient of the graph and therefore the rate of reaction. An increase in substrate concentration will lead to an increase in the rate of reaction proving that it is in fact the limiting factor.

  1. Why the Body Needs Energy? Every living cell within the ...

    * The Pons Varolii stops inspiration therefore provoking expiration. When the respiratory centre tells the diaphragm to contract, air is sucked into the lungs, stimulating nerve cells called stretch receptors found in the tissues. * The receptors send impulses to the Pons Varolii which then sends impulses to the diaphragm telling it to relax therefore provoking expiration.

  2. out how different concentrations of the enzyme pectinase affect the degradation of the substrate ...

    Competitive inhibition is reversible, unlike non-competitive inhibition, where the structure of the enzyme is being denatured and hence having a very low reaction rate in which juice is produced. * The enzyme concentration, which will be the factor that I will be testing in my investigation.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work