Biology Topic 6 Flashcards

What are the 5 stages of decomposition?

What are the characteristics of putrefaction?

What happens during autolysis?

List 4 factors which affect rate of decomposition

What is the order of types of orgs. attracted to a cadavar during decomposition?

Describe the stages of rigour

Describe the role of microorgs.

What type of enzymes can be used in gel electrophoresis to produced fragments from a section of DNA?

List 5 structures found on a virus

List 9 structures found in a bacterium

Describe a gram -ve bacterial cell wall

Describe a gram +ve bacterial cell wall

What are the 3 stages of HIV?

In which phase of HIV does AIDS onset?

What are the symptoms of active TB?

What copies viral RNA into viral DNA?

What inserts viral DNA into host DNA?

List 4 non-specific immune response mechanisms

What are 2 types of phagocytes?

What do interferons prevent?

What does MHC stand for?

What do antibodies do?

Which type of the specific immune response are T killer cells involved in?

Which type of specific immune response are B cells involved in?

What does non-overlapping, degenerate triplet code mean?

Which is the coding region: introns or exons?

By which process are introns removed?

What are 2 post-transcriptional changes other than mRNA splicing?

List 6 ways pathogens can be transmitted

What are 4 barriers to pathogens on the human body?

Define: Active immunity

How do you gain active natural immunity?

What type of immunity do vaccines give you?

Define: Passive immunity

Give an example of natural passive immunity

Define: vaccine

List 3 pros of vaccinations

List 4 cons of vaccinations

What are 3 evasion mechanisms of HIV

Which receptors are on the surface of HIV?

How does TB evade the immune system?

The 2 types of antibiotic are...

What is the difference between a broad spectrum and a narrow spectrum antibiotic?

Changes in hospital codes of practice

What does HAI stand for?