PLPA 2003 MIDTERM EXAM QUESTIONS WITH VERIFIED ANSWERS

PLPA 2003 MIDTERM EXAM QUESTIONS WITH VERIFIED ANSWERS .What does Leeuwenhoek use as a unit of scale? a) micrometers b) cat whiskers c) wood fibers d) ant legs e) sand - ANSWERS-Sand .Based on this letter, which of the following might most accurately be described as a potential bias that would affect our interpretation of this primary historic account? a) his fear of dogs b) there are no indications of any of the potential biases c) his hatred of the English d) his very strong religious convictions e) his distrust of female scientists - ANSWERS-There are no indications of any of the potential biases .Which of the following is NOT a sample type that Leeuwenhoek discusses in this letter? a) human blood b) snow-water c) rain water d) pepper e) sea water - ANSWERS-Human blood .Who was the first individual most credited with "discovering" that bacteria (and other microbes) exist and what they look like as individual cells? a) Robert Hooke b) Louis Pasteur c) Antonie Van Leeuwenhoek d) Robert Koch - ANSWERS-Antonie Van Leeuwenhoek .According to the author how have advances in bacteriology effected the demographics of the United States. a) aging b) more homogenous c) more youth d) greater diversity - ANSWERS-aging .What does the author describe as "the most successful of all microbes"? a) mitochondria b) nuclei c) archaea d) bacteria e) viruses - ANSWERS-mitochondria .The author advocates for several changes in the way that scientists think about and study microbial pathogens. Which of the following is NOT one of the changes he suggests. a) focus on hyper-virulence b) place less emphasis on the mouse as a model host c) Also consider the importance of other microbes on our bodies that are not the cause of disease. d) reconsidering use of antibacterial pathogens - ANSWERS-Also consider the importance of other microbes on our bodies that are not the cause of disease .Which disease does the author give most credit to for enabling crucial discoveries in genetics? a) pneumonia b) syphilis c) plague d) AIDS - ANSWERS-pneumonia