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Topic 6 > Immunity > Flashcards

Flashcards in Immunity Deck (13):
1

Active artificial

Vaccination

2

Active natural

After getting the disease

3

Passive artificial

Given antibodies

4

Passive natural

Immune from antibodies from mothers breastmilk

5

Whats the types of vacinnations?

Attenuated viruses - weakened
killed bacteria
toxin that's altered to harmless
an antigen bearing fragment

6

How do antibiotics disrupt cell growth?

Inhibition of cell wall synthesis, distruption of cell membrane- changes in permeability, inhibition of nucleic acid, protein synthesis

7

Hospital acquired infections due to poor hygiene

not washing hands
equipment not sterile
not changing bed linin

8

Hospital acquired infections due to codes of practice

wash hands
screening
septic tecnhiques
people with HAI moved

9

Describe antibioitic resistance

MRA is a HAI that's resistant so is difficult to treate
infections are more common due to more antibiotics in hospitals as they have evolved
Take full course, over prescription

10

Describe evolution of antibiotics

Within a gene pool a genetic mutation occurs increasing variation. When a change in selection pressure occurs a new allele becomes advantageous, could be the mutation. Having this allele increases the likelihood of survival and reproduction increasing allele frequency

11

What are the two types of antibiotic?

Bactericidal - destroy bacteria
or bacteriostatic - prevent multiplication then immune system destroys them

12

How you reduce the spread of multiple resistant bacteria?

Take full course of antibiotic
Only used when needed
Infection control in hospitals

13

Describe conjugation

Plasmid carries gene for antibiotic resistance
One strand of plasmid DNA transfers between bacteria and each bacterium replicate to produce a complete plasmid