bio c3.2--defense against disease

Question 1

zoonotic disease

Answer 1

an infections disease of humnas caused by a pathogen that was originally carried by a non-human animal

Question 2

how does skin act as a primary defense against disease /4

Answer 2

1. skin is a tough layer of keratinized cells
2. skin is dry
3. lysosome is present which breaks down pathogens
4. pH of skin is too acidic for most pathogens

Question 3

how does mucous act as a primary defense against disease /3

Answer 3

1. the enzyme lysosome is present in mucous to break down pathogens
2. pH is too acidic for most pathogens
3. mucous is sticky so traps pathogens