AnswersFL-2000315-Biology 1 CRUnit Test

The Immune System Answers

5 verified answers
1
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Identify how the physical barriers of the immune system protect the body against pathogens. Check all that apply.

A
your nose produces oil to keep pathogens from entering the body through your nose
B
skin contains tightly packed cells
C
skin is tough, flexible, and waterproof
D
you cough when a pathogen enters your mouth
E
you sneeze when a pathogen enters your nose
2
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What produces acid, oil, and an antibacterial substance to defend against pathogens?

A
skin
B
eyes
C
nose
3

What is the role of lysozyme?

A
produces an antiviral substance
B
breaks down the cell wall of bacteria
C
destroy viruses that enter the body
4

What is the role of Langerhans cells?

A
prevent pathogens from entering the body using antibacterial agents
B
destroy pathogens that enter the body using white blood cells
C
identify pathogens that enter the body and carry them to lymph nodes for destruction
5

Fill in the blank with the best word to complete the sentence.The ⇒ complement system is a group of proteins in the blood that attack pathogens that enter the body and kill them.

Answer:

complement

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