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What is an microoragnism?





what is an anti-microbial and antibiotics?

An antimicrobial is acleaning agent that kills alltypes of bacteria

Antibiotics kill only bacteria


What are dangers of dangers?


Bacteria can develop resistance to antibiotics, making them ineffective


How can we reduce resistance?

We need to limit use of antibiotics

Complete the course of antibiotics


How does the immune system destroy microorganisms? 






















Firstly the type of disease usually has a perticular white blood cell to destroy , during the process of the white blood cell finding the bacteria, the subject may exhibit symptoms of the disease

The white blood cell sends antibodies which it produces to latch onto the bacteria's antigens

The white blood cell then engulfs it, destroying it.

Then the white blood cell that we'er fighting die,  the slowly die disease, but they leave memory cells which will produce the correct white blood cells quickly, if reinfected


How do microoganisms cause harm in our body?

They produce toxins and reproduce rapidly. Only viruses and bacteria do this


What is a vaccine and what is its function?

The injection is weakened strains of a disease, which once injected, stimulates white blood cells in the body to reproduce and kill the bacteria

They prevent epidemics if 95% of the population is injected


What is an open-label, blind or double blind trail?

Open-label- is where both the patient and doctor are aware of what is happening

Blind- is where the patient does not not know what they are receiving

Double blind- nether the patient or the doctor know what is happening


What is the heart?

It is part of the circulatory sytem, it is adouble pump with the left side supplying oxygenated blood from the lung to the rest of the body and the other side supplying the lungs with deoxgyenated blood


What are three types of blood vessels and what are their function?

Capillaries- they are the smallest blood vessel and are found at the end of artries. They have thin cell walls of one cell in thickness tyo allow nutrients through them

Arteries- have thick muscular walls to account for the extreme pressure the blood is under when it enters the vessel

Veins- these blood vessels have thinner walls than arteries and have valves to aid the blood when returning to the heart


What are heart attacks and heart disease caused by?

Heart attacks are caused by fatty deposits blocking the bloood supply to the heart

Heart disease is caused by genetic factors and lifestyle factors Eg. drinking, smoking etc. 


how is your heart rate and blood pressure recorded?

Your heart rate is recorded by taking your pulse


Your blood pressure measures the pressure on your arteries when the heart is relaxed and when they are tensed, this is recorded as twoo valves that are compared to a normal range to determie their significance


Two facts aboout the nervous and hormonal systems?

They are automatic

They have receptors, processing centres and effectors

They change at state by using Negative Feedback


What does ADH's cocentration effect the balance of water in the body?

Less ADH causes you to urinste more

More ADH causes you to urinate lass