CU254 Causes and spread of infection. 1.1 Viruses are pieces of nucleic acid wrapped in a thin coat of protein that replicate only within cells of living host. Bacteria are one cell micro-organisms with simple cellular organizations whose nucleus lacks a membrane. Parasites may be protozoa‚ yeast or multi cellular organisms such as fungi or worms that live in or on a host to obtain nourishment without providing any benefit to the host. Fungi there are many different varieties of fungi‚ and
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Causes and Spread of Infection 1.1/1.2 | Features | Illnesses Caused | Bacteria | Can be helpful‚ can be an aid in digestion‚ able to break down sewage‚ can be used in food (yoghurt)‚ affects odour‚ taste and texture. Needs nutrients‚ pH‚ time‚ temperature‚ +/- Oxygen and water activity to grow. | Lyme disease‚ Tuberculosis | Viruses | Exist only to replicate‚ need a host‚ infect all types of cells‚ found in soil‚ water and air. | Hepatitis A‚ Norovirus‚ Measles‚ Mumps | Parasites | Need
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The plasma or cell membrane exhibits ability for the cell to discriminate in its chemical exchanges with its environment and this makes cell membrane fundamental to life. This property can only be possible because of the cell membrane’s selective permeability (Campbell and Reece‚ 2002). The structure of the membrane can be best illustrated by the fluid mosaic model where the membrane is said to be a fluid structure with various proteins embedded in or attached to a bilayer of phospholipids (Campbell
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UNIT 22 INFECTION CONTROL OUTCOME 1 UNDERSTAND THE CAUSES OF INFECTION 1.1 Bacteria are one celled micro-organisms that get their nutrients fro their environment to live eg: The human body. Bacteria causes infections and can reproduce either inside or outside the body. Viruses are pieces of nucleic acid (DNA or RNA) wrapped in a thin coat of protein. Viruses need to be inside living cells to grow and reproduce. They do not survive long unless they are inside a living thing eg: person
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Preventing Infection INFECTION The invasion or colonization of the body by pathogenic microorganisms The presence of a particular type of microorganism in a part of a body where it is not normally found and may lead to a disease Microorganism A small (micro) living plant or animal that cannot be seen without the aid of a microscope A microbe Contributions TYPES of Microorganism Bacteria Fungi Protozoa Algae Viruses Multicellular Animal Parasites BACTERIA Very small‚ simple‚ unicellular
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Outline the roles of membrane at the surface of the cell The plasma membrane encloses the cell‚ defines it boundaries and maintains the essential differences between the cytosol and the extra-cellular environment. The separation of the internal and external environment maintains a constant internal environment which is essential for the cell to function efficiently. Membrane receptors can interact with specific molecules corresponding to stimuli such as hormones to generate a signal cascade which
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CU 254 Causes and spread of infections 1.1Identify the difference between bacteria‚viruses‚fungi and parasites. Bacteria are organisims made up of one cell.They multiply by themselves. Bacteria is everywhere inside and outside our bodies.Some are mostly harmless and some can be useful. Viruses. They are too small to see even by the eye. Cannot not muliply on their own so there fore need an host. They are capable of latching on to cells. We are often open to attack by them. Fungi Comes
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This essay will explore the subject Infection Control and how Healthcare Professionals control and prevent nosocomial or hospital acquired infections (HCAI’s)‚ defined as an “infection whose development is favoured by a hospital environment‚ such as one acquired by a patient during a hospital visit or one developing among hospital staff” Oxford Dictionary (2008). Common nosocomial infections include; urinary tract infections (UTI)‚ surgical wound infections‚ as well as causative agents which are
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INTRODUCTION Bacillus anthracis has recently become popular as the causative agent of anthrax infections. Belonging to the bacillus species‚ the bacterium is considered‚ along with Bacillus cereus‚ to be of extreme medical importance. Until recently‚ the condition caused by the bacterium was rarely heard of. Although the bacterium is naturally found in the soil‚ its rare occurrences in humans have only been observed in those working with livestock or imported livestock products‚ therefore the
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Infection Control What causes people to get sick? How is disease spread from one person to another person? What can be done to stop the spread of infection and disease? As a health care worker‚ it is important to know the answers to these questions. When you understand what causes infection‚ you can learn how to prevent it. Infection control is a set of practices and procedures that will help to prevent the transmission of disease within a health care facility. Infectious and Communicable Diseases
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