SPHU 1020 - Midterm 1 Exam Study Guide.
Symbiosis - Answers✔Living together, an association between 2 or more species
Mutualism - Answers✔both species benefit
commensalism - Answers✔one species benefits and the other is neither helped nor harmed
parasitism - Answers✔pathogen lives at expense of another species
incidence - Answers✔number of new cases of a disease in a set population over a specific
period, gives information on the spread of a disease
prevalence - Answers✔total number of people infected within a specific population at any given
time, measures how seriously and how long a population is affected
endemic - Answers✔diseases constantly in the population
epidemic - Answers✔incidence of a disease is suddenly higher than expected, morbidity and
mortality rates may increase
pandemic - Answers✔worldwide epidemic
basic reproductive rate (R0) - Answers✔for each sick person, the number of subsequent people
that will be infected, indication of contagiousness
prokaryote - Answers✔simplest type of cell, no nucleus, no membrane bound organelles
eukaryote - Answers✔more complex, contains 3 basic cell structures (nucleus, cytoplasm, and
cell membrane)
nucleus - Answers✔DNA replication
nucleolus - Answers✔Makes ribosomes
endoplasmic reticulum - Answers✔protein synthesis
Rough Endoplasmic Reticulum - Answers✔proteins are made by ribosomes on ER surface
ribosomes - Answers✔makes proteins
golgi bodies - Answers✔modify, sort, and package proteins to final form for storage or transport
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