Bacteria + virology Flashcards
What is a pathogen ?
Any microorganism that can cause a disease or illness
What type of cell is bacteria ?
Prokaryotic
Describe an infection
The establishment of a microorganism within a host
Name 4 microorganisms
Bacteria
Virus
Parasites
Fungi
Do bacteria have a nucleus ?
No
Explain virulence ….
A pathogens or mic does ability to infect or damage a host
Aka how strong it is
What does “itis” suggest
Inflammation of injection
Name the three bacteria shapes
Spheres (cocci)
Rods (bacilli )
Spirals
Name the 5 types of spheres (cocci)
Streptococci Diplococci Tetrad Sacrina Staphylococci
Name the types of rods (bacilli)
Chain of bacilli
Flagellate rods
Spore former
Name some viruses
Influenza Hepatitis C Rotavirus Ebolavirus Adenovirus Bacteriophage
What’s bigger bacteria or virus?
Bacteria
How can infections be caused ?
By the bacteria or the toxins it produces
Name some bacteria that release toxins
Salmonella Escherichia coli Shigella Niesseria Vibrio cholerae
Name some bacterial infections
Tetanus Tuberculosis Pneumonia Strep throat Whooping cough UTI
Explain gram positive infections
They are easier to kill
Their peptidoglycan layer can absorb antibiotics easily.
Their wall is thinner
What structure does gram negative bacteria have ?
Rods
How would you indenting if someone has an infection ?
Always do obs , do a gram stain
Fever
Confusion
High heart rate
Increased respiration
Explain gram negative Bacteria
They resist the intrusion of antibiotics due to their multi layered structure
What is a culture test ?
A test to find germs such as bacteria or fungus that can cause infection.
Grow bacteria on a algae plate
What is a sensitivity test ?
A test to check what medicine such as an antibiotic will work best to treat an illness or infection
Where can cultures be taken from ?
Blood Mucus or sputum Urine Faeces Skin
Are virus’s living organisms ?
No they are parasitic
Are bacteria living organisms ?
Yes
