Serotype New Variant of A Known Pathogen Exm Practice

What is a serotype? Group of answer choices A new variant of a known pathogen. A disease-causing agent. The application of cultural types to disease models. The distribution of disease in small populations. Question 2 How does natural selection work as a mechanism of biological evolution? Group of answer choices Organisms adapt to their surroundings during life and pass these adaptions on to their offspring. Genetic mutations rid a population of the strongest traits. Genetic variation will include organisms with genetic advantages that will produce more offspring with these survival advantages. Survival of the fittest. Question 3 How is sickle-cell trait (not sickle cell disease) a selective advantage? Group of answer choices They are heterozygous for Hb . The abnormal Hb hemoglobin diminishes the oxygen supply needed by malaria parasites to reproduce. They are less less likely to die or fail to reproduce because of malaria. All of the above. S Question 4 Which of the following is NOT part of an epidemiological analysis? Group of answer choices The source of diseases. The local context of disease experiences as a goal of research. Mortality and morbidity rates. Incidence and prevalence rates. Question 5 Which of the following does Brown consider the most important difference between the Anopheles labranchiae found on Sardinia and those found on the mainland? Group of answer choices A preference for freshwater, as opposed to brackish water, for breeding. Active feeding primarily around dawn and dusk. Presence in all ecological zones. The tendency to not rest or hibernate in human populations.