ANSWERS

Unit 4: Link and Think

1.

Disease	Type of Agent	Symptoms	Means of Transmission	Treatment
Brucellosis	bacteria	fever, headache, weakness, chills, ache	ingestion: from diseased cows, through milk or discharges	tetracycline/streptomycin (antibiotics)
Ringworm	fungus	scaly, irritated skin; also affects hair and nails	contact, direct or indirect, with diseased area	fungicide
Anthrax	bacteria	boils, swollen lymph nodes, possible death	ingestion or respiratory: handling products of diseased animals, eating undercooked diseased meat	penicillin or tetracycline (antibiotics)
Malaria	(protist)	chills, fever, headache, sometimes jaundice, blood coagulation, shock, kidney failure, CNS disorders	blood: usually through mosquito bite	antimalarial drugs
Hepatitis A	virus	jaundice, dark urine, fatigue	ingestion: food contaminated by feces of infected person	no special medicines, though it can be prevented with vaccination

2. Family (Arthrodermataceae is the name of a family to which all three genera belong.)

3. Glycoprotein, because Bacillus anthracis is gram-positive.

4. Ghana, Thailand, Honduras

5 a. They are all tropical countries. Malaria is found in southeast Asian countries and is not limited to a certain race. P. falciparum is not adapted to live in saltwater.

6.

1. Hepadnaviridae
2. DNA
3. yes, it is enveloped
4. Hepatitis B

7.

1. No
2. Hepatitis A belongs to the Picornavirus family. Hepatitis B belongs to the Hepadnaviridae family. Hepatitis C belongs to the Flaviviridae family.