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Field observation suggests that populations of a particular species of herbivorous animals undergo cyclic fluctuations in density at 3 to 5 year intervals. Which represents a plausible explanation of these cycles? a. Periodic crowding affects the endocrine system, resulting in increased aggressivesness b. increases in population density lead to increased […]

Q1. What anemia classification (not the name) would be a hallmark for the red blood cell in the center of this slide? What anemia is characteristic for this kind of bone marrow? This is “new methylene blue” stained blood. What cell is stained? What are the “inclusion bodies” called in […]

Q.1. Clostridium and Streptococcus are both catalase-negative. Streptococcus grows by fermentation. Why is Clostridium killed by oxygen, whereas Streptococcus is not? 2. Assume that after washing your hands, you leave ten bacteria cells on new bar of soap. You then make a decision to do plate count of the soap […]

1. Trace the pathway of a sperm from the male testes to the uterine tube of a female. 2. Fertilization involves much more than a mere restoration of the diploid chromosome number. What does the process of fertilization entail on the part of both the egg and sperm? What are […]