PLPA 2003 MIDTERM EXAM QUESTIONS WITH ACCURATE
SOLUTIONS
1) What was the first domesticated plant?
A) Apple
B) Bottle Gourd
C) Wheat
D) Corn -- Correct Answer ✔✔ B. Bottle Gourd
2) What was the first domesticated animal?
A) Dog
B) Cow
C) Chicken
D) Pig -- Correct Answer ✔✔ A. Dog
3) Which of the following diseases is thought to have had an animal origin?
A) Common Cold
B) Diptheria
C) Smallpox
D) Mumps
E) All of the above -- Correct Answer ✔✔ E. All of the above
4) What is the likelihood of two individuals that each carry one copy of the sickle cell
allele (a recessive trait ie. SA) of having a child that has sickle celled anemia (SS)?
A) 0%
B) 25%
C) 50%
D) 100% -- Correct Answer ✔✔ B. 25%
, 5) What does Leeuwenhoek use as a unit of scale?
A) Micrometers
B) Wood Fibers
C) Cats whiskers
D) Sand
E) Ant legs -- Correct Answer ✔✔ Sand
6) Which disease does the author give most credit to for enabling crucial discoveries in
genetics?
A) Plague
B) Pneumonia
C) Syphilis
D) AIDS -- Correct Answer ✔✔ Pneumonia
7) Most scientists agree that malaria was brought to the Americas by the first human
migrants.
True or False? -- Correct Answer ✔✔ False, it was brought by Europeans
8) New England suffered less from Malaria compared to the more southern areas in the
US. Which of the following statements best explains why that was true?
A) There were fewer animal hosts of malaria in New England
B) The New England population had a higher resistance to malaria
C) The life cycle of the pathogen is slowed in cooler weather
D) The mosquito vector was not present -- Correct Answer ✔✔ The life
cycle of the pathogen is slowed in cooler weather
9) According to the author, aside from malaria, what other disease significantly
impacted the traveling Scottish settlers on their way to Darien?
A) Yellow Fever
B) Syphilis
SOLUTIONS
1) What was the first domesticated plant?
A) Apple
B) Bottle Gourd
C) Wheat
D) Corn -- Correct Answer ✔✔ B. Bottle Gourd
2) What was the first domesticated animal?
A) Dog
B) Cow
C) Chicken
D) Pig -- Correct Answer ✔✔ A. Dog
3) Which of the following diseases is thought to have had an animal origin?
A) Common Cold
B) Diptheria
C) Smallpox
D) Mumps
E) All of the above -- Correct Answer ✔✔ E. All of the above
4) What is the likelihood of two individuals that each carry one copy of the sickle cell
allele (a recessive trait ie. SA) of having a child that has sickle celled anemia (SS)?
A) 0%
B) 25%
C) 50%
D) 100% -- Correct Answer ✔✔ B. 25%
, 5) What does Leeuwenhoek use as a unit of scale?
A) Micrometers
B) Wood Fibers
C) Cats whiskers
D) Sand
E) Ant legs -- Correct Answer ✔✔ Sand
6) Which disease does the author give most credit to for enabling crucial discoveries in
genetics?
A) Plague
B) Pneumonia
C) Syphilis
D) AIDS -- Correct Answer ✔✔ Pneumonia
7) Most scientists agree that malaria was brought to the Americas by the first human
migrants.
True or False? -- Correct Answer ✔✔ False, it was brought by Europeans
8) New England suffered less from Malaria compared to the more southern areas in the
US. Which of the following statements best explains why that was true?
A) There were fewer animal hosts of malaria in New England
B) The New England population had a higher resistance to malaria
C) The life cycle of the pathogen is slowed in cooler weather
D) The mosquito vector was not present -- Correct Answer ✔✔ The life
cycle of the pathogen is slowed in cooler weather
9) According to the author, aside from malaria, what other disease significantly
impacted the traveling Scottish settlers on their way to Darien?
A) Yellow Fever
B) Syphilis
