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

Explain the ways in which materials move into and out of cells

Extracts from this document...

Introduction

Explain the ways in which materials move into and out of cells. (P2) States of matter: Solid: solid is something that cannot flow. Bones, skins and cartilage are solid because the molecules and atom are securely packed together that the motion is concentrated to a tiny vibration that cannot be seen. Liquid: liquid is something that can flow like blood and urine. The atoms have more movement unlike solids so it results to flowing. Gas: oxygen, nitrogen and carbon dioxide are the common gases we breathe in. The molecules and atoms of gases are quite apart from one anther and are able to move more easily. Materials: Particulate: carbon particles in a polluted air can spread to the air passages causing scaring and disease. Particulate material can enter any open wound. The material can rest in deeper tissues where the macrophage will try to engulf and digest it. Bacteria's that have invaded are digested by lysosomes and it will leave some debris behind like particulate material. Ionic: this contains atoms which can have a positive or a negative charge due to losing or gaining electrons. These atoms or group of atom are called electrolytes or ions that usually are moving in and out due to being needed or eliminated products from the thousand chemical reaction. In solution: substances that are able to dissolve in liquid is called solutes, the liquid is the solvent that is dissolved in the solute is a solution. ...read more.

Middle

Exocytosis: this sis the process of releasing the materials from the inside in to the to the tissue fluid. The membrane vesicle moves through the cells into the cell membrane by combining with it and releasing the contents by introducing the secretary molecules into the body system. This is also a method of replacing cell membrane that is used up in the exocytosis. Factors affecting movement: Influences on movement of materials: Size: the size of molecule is very important in osmosis as if its big it won't be able to move around the body. The size of the surface is also important as if the molecules need to big enough to be moved to do its work in the cell. Distance: the distant between the cells and material can influence the movement as if it to far apart it would be difficult to make a journey in an out, therefore it won't have enough energy to repeat the process. Temperature: if the temperature is to hot it can bust or kill the cells which can damage the functioning of the body. Osmotic potential: this solution has the power to gain or loose water molecules the membrane. The weaker the solution the higher osmotic potential it has than a concentrated solution. When the tissue fluid returns to the blood the osmotic are low. ...read more.

Conclusion

The semi-permeable is helped by the phospholipids protecting the cells and insuring that the barriers of other material do not enter or exit the membrane. This helps the other organic chemicals from being produced inside the cells. Glucose is the main molecule that helps the energy movement. Glucose is the only molecule that is able to go through where as other materials like acid, oxygen, lipids, amion, water and carbon dioxide are likely to defuse in and out of the cells. Therefore the bilayer is there to allow certain molecules to go through if all molecules try to go through the wall. Bilayer would give some of molecules from the receptors for the chemical cell for example the transmitter that is found in the human body The water is passed from phospholipids bilayer due hydrophobic that has a tail water that does not allow the tail water to go through the molecule. Molecules that are found in the human body are not able to go through except molecules like water, oxygen and carbon dioxide. Other than those molecules, molecules that try to go through wont be able to because for that to happen they have to go through the bilayer and then into then to cells. This process can only take place if a protein from somewhere else comes and allows them to go pass through. Sources: http://www.emc.mariocopa.edu/faculty/farabee/BIOBK/BioBooktransp.html#The%20Membrane http://en.wikipedia.org/wiki/Lipid_bilayer ?? ?? ?? ?? 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 Healthcare 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 teacher thought of this essay

3 star(s)

Star rating 3
This assignment has been produced for Unit 13

Marked by teacher Jenny Spice 05/09/2013

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 Healthcare essays

  1. Marked by a teacher

    The Role of Energy in the Body and the Physiology of Three Named Body ...

    5 star(s)

    Structure and Functions of Blood. Erythrocytes contain haemoglobin, a very important respiratory pigment essential for human life. Haemoglobin is a very special iron-containing protein because: * in an environment containing a high concentration of oxygen, the haem part of the molecule forms a strong chemical bond with oxygen, becoming oxyhaemoglobin.

  2. Effective communication - P1, P2, P3, M1

    should remove yourself from the meeting and explain to them that you will talk to them another time. Also, service users who are under the influence of drugs or alcohol may not be able to communicate with the professional in the normal ways.

  1. Describe the distribution of water in the body and the function of constituents of ...

    They can become cations (positively charged) or anions (negatively charged). Some electrolytes are considered essential minerals, these can not be made in the body and are an essential part of health: 1. The major components of bone and teeth are phosphorus and calcium.

  2. Personal & professional development in Health & Social care.n this assignment I am going ...

    They bad thing about this experience was that I did not complete the unit at my best ability and I know I could have done better. 4. Analysis: I started this assignment off thinking I wasn't going to pass but I managed to at least achieve something.

  1. Explain the importance of homeostasis in maintaining the healthy functioning of the body. examples ...

    This is when the body goes over heated and is not able to resist it. > Other heart related diseases and death. Blood glucose of fall and rise above normal ranges There are two types of effects in the body when blood glucose falls or rises from above its normal range, they are known as, Hyper and Hypo.

  2. Outline current legislation, guidelines policies and procedure within own UK Home Nation affecting the ...

    It also includes poisoning, giving a child alcohol or illegal drugs, drowning or suffocation. Physical harm may also be caused when a parent or carer fabricates the symptoms of illness in a child. In pregnancy an unborn child can be harmed by domestic violence.

  1. Health and Social Care Unit 3 Health and Well being

    People who I have helped to quit smoking have been shocked about how much money they actually save, which has a positive effect on their quality of life as they have more money to spend on things that they want or require making them happier, boosting their emotional well-being.

  2. Health and Social Care Communication. Examples from work with a service user with ...

    if she needs to be taken or brought back from the session. How will I obtain resources? Local museums are a good source and will often lend out materials, pictures, objects, etc. I will also contact Majella's daughter for pictures ect.

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