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

Describe the functions of the main cells components

Extracts from this document...

Introduction

P1- Describe the functions of the main cells components Cells are the basic units if organisms in which all living things are made. The appearance of the cells depends of the area it is located at and the functions within the organism. A cell consists of many components. These are plasma membrane, the cytoplasm, the endo reticulum (rough and smooth), Golgi apparatus, lysosomes, mitochondrion and the nucleus. Each of these parts of the cell, play an important role, if it did not have all these parts then the cell would not work in a what it is meant to. Diagram of a typical animal cell (3.bp.blogspot.com) ...read more.

Middle

The function of the cytoplasm is to provide structure to the cell, a place for all the components of the cell to sit and to also provide a place for things like growth to take place. The nucleus is the largest structure within the cell, containing many organelles. It is usually found in the middle of the cell, but in some plant cells it can be found at the bottom. The function of the nucleus is very important because it controls what the cell does, as well as containing instructions on how to make new cells. The Golgi apparatus is a flattened, layered, sac-like organelle which looks like a stack of pancakes. ...read more.

Conclusion

is a cast system of interconnected, membranous tubes, found in the cell's cytoplasm. There are two variations which are called rough and smooth. Rough ER is so-called because it is studded with tiny black bodies known as ribosomes and has the function of manufacturing cell proteins and acting as a temporary storage area. Smooth ER has no ribosomes attached and is involved in the metabolism of lipids and fats. The lysosomes are round organelles surrounded by membrane which contain powerful digestive enzymes capable of digesting all major chemical components of living cells. They can be found in all parts of the cell's cytoplasm. Their function is to travel around the cell, destroying old or damaged organelles. They can also destroy bacteria and other unwanted materials, which enter the cell. ?? ?? ?? ?? 1 ...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 Molecules & Cells section.

Found what you're looking for?

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

Here's what a star student thought of this essay

3 star(s)

Response to the question

This is an example of a low level essay, it could be improved with additional analysis and the courage to explore beyond the question. The candidate responds to the given statement in rather a basic manor, s/he only uses simplistic ...

Read full review

Response to the question

This is an example of a low level essay, it could be improved with additional analysis and the courage to explore beyond the question. The candidate responds to the given statement in rather a basic manor, s/he only uses simplistic detail and each description is rather brief. S/he could show a greater understanding by going into more depth. On a positive note I like the addition of the labelled diagram it allows the reader to view the structures described, perhaps the candidate could have shown a diagram for each structure or related each paragraph to the diagram to add more in depth discussion. The candidate only gives a brief description of the function of each organelle and at this level I would expect s/he to be relating the organelle structure to its function.

Level of analysis

The analysis given is really quite basic, more detail is required to achieve a higher grade. S/he also only gives one or two functions for each organelle when in reality each has several functions. For example the candidate only mentions two functions of the Golgi apparatus, it is responsible for producing secretory enzymes such as pancreatic amylase which is essential in starch digestion, it also secretes the carbohydrates needed to make cell walls and adds carbohydrates to proteins to form glycoprotein which have several important functions. In addition the candidate only mentions animal cells and as the question doesn’t specify this I would imagine that it’s open to interruption and a higher grade could be achieved by discussing both plant and bacteria cells, perhaps even single-celled organisms. This allows for comparison between the various cells and also shows a greater level of interest.

Quality of writing

The candidate uses a rather simplistic language and to achieve a higher grade I would expect a wider range of vocabulary. There are a few issues with spelling and grammar. However overall the essay flows well and is nicely laid out.


Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by PicturePerfect 01/03/2012

Read less
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 Molecules & Cells essays

  1. Marked by a teacher

    Investigating respiration of maggots

    5 star(s)

    This is because the rate of respiration is dependent on the mass of the maggots, so therefore I must know the exact mass of the maggots. I will then be able to calculate the volume of oxygen produced per minute per gram.

  2. Marked by a teacher

    An investigation to examine the effects of temperature on membrane stability in beetroot, by ...

    3 star(s)

    To create the cuboids, I used the knife and judge purely by eye how exact the shape was, I then cut down the length of the cuboid by using a ruler. I decided that using cylinders of beetroot would be the best shape as with the cork borers I can

  1. Peer reviewed

    The four organelles I am going to choose to illustrate my examples on how ...

    3 star(s)

    It is then built up to ATP again in the mitochondria after being recycled. After being catalyzed by enzymes the breakdown of glucose is dissolved in the internal fluid. Enzymes with the association of ATP lie together in order, in the cristae.

  2. An experiment to find of the isotonic point of root vegetables cells in contents ...

    1 30 32 30 31 30 29 30 28 30 27 Run 2 30 31 30 30 30 30 30 29 30 28 Run 3 30 31 30 30 30 29 30 29 30 27 Mean 30.0 31.33 30.0 30.33 30.0 29.33 30.0 28.6 30.0 27.33 Difference (mm)

  1. A Level Biology revision notes

    bond forms between both monomers * Hydrolysis: break down of a polymer o Reverse of the condensation reaction o This is the process of digestion Carbohydrates * Organic molecules which contain C, H and O * Bind together in the ratio Cx(H2O)y * Monosaccharides � single sugar (monomer)

  2. Applied Science

    venular end of capillaries because of the net inward force of colloid osmotic pressure. Osmotic pressure is due to the presence of impermeant solutes on one side of cell membrane. Because of the Na+ and K+ pump, sodium (extracellular) and potassium (intracellular)

  1. Anatomy and physiology - cells, tissues and systems of the body. Describe the ...

    The body has four main types of tissue which are connective, epithelial, muscle and nervous. Together they take a role in the functioning's of the body's organ structures. These tissues are: connective, epithelial, muscle and nerve. Connective tissue is used throughout the whole body which has two elements, sells and matrix.

  2. Nervous system

    (1) which provides automatic involuntary regulation of smooth muscle, glandular secretions and cardiac muscle. (3) The ANS includes a sympathetic division which stimulates tissue metabolism, for example it accelerates the heart rate or increases alertness in response to adrenaline.

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