Question

8. Which of the following body systems does the immune system rely on to provide the first line of defense against pathogens?
A. integumentary system
B. nervous system
C. circulatory system
D. endocrine system

9. Which of the following diseases is not explained by germ theory?
A. malaria
B. HIV
C. cancer
D. flu

Answer 1

for Q9. most likely answer should be cancer. though it's not completely correct

Answer 2

because there are some viruses like oncovirus which also cause cancer

Answer 3

The first line of defence is non–specific and aims to stop microbes from entering the body. The skin and mucous membranes act as a physical barrier preventing penetration by microbes.
Integumentary system comprises the skin and its appendages. So the correct option for Q8. should be A

Answer 4

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Answer 5

@ms.made hey, u there ?

Answer 6

Hmm..
A. integumentary system
C. cancer

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