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Question 23
Fill in the blanks

(a) Pneumonia is an example of___disease.
(b) Many skin diseases are caused by___.
(c) Antibiotics commonly block biochemical pathways important for the growth of __.

(d) Living organisms carrying the infecting agents from one person to another are called ____.

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Solution

(a) Communicable

Communicable diseases are those that spread from one person to another through a variety of ways that include: contact with blood and bodily fluids; breathing in an airborne virus; or by being bitten by an insect.


(b) Fungi

Fungi usually make their homes in moist areas of the body where skin surfaces meet: between the toes, in the genital area, and under the breasts.


(c) Bacteria

Antibiotics are medicines that help stop infections caused by bacteria. They do this by killing the bacteria or by keeping them from copying themselves or reproducing. The word antibiotic means “against life.”

Any drug that kills germs in your body is technically an antibiotic.


(d) Vectors

Infections are caused by infectious agents including viruses, viroids, bacteria, nematodes such as parasitic roundworms and pinworms, arthropods such as ticks, mites, fleas, and lice, fungi such as ringworm, and other macroparasites such as tapeworms and other helminths.


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