Bio 2 Exam 2 Test
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| A. independent: factors that regulate population growth regardless of population size (natural disasters, severe weather conditions) dependent: factors that cause growth rate to slow with an increase in density (disease, resource availability,predation)B. projections on the surface of the cell that help with attachment to surfacesC. Not cells (protein is protecting come genetic material), can’t reproduce on its own (needs host cell to infect), can’t preform metabolism (rely on host cell to make everything that it needs)D. Energetic hypothesis: the inefficency of energy transfer limits length of chain (only 20% transferred)E. Systematic: study of evolutionary relationships. Linnnaean: based on morphologyF. tube to exchange genetic material between two bacterial cellsG. selection favors individuals with high reproduction rates (affected most strongly by density independent factors,if there are few individuals, exhibit exponential growth, yound at 1st reproduction, short lifespan, little to no parent care, small offspringH. General Times= the average interval between birth and production of the first offspring. The smaller the body size usually leads to faster generation timesI. 1) morphology: the shape (DNA/protein behavior). 2) physiology: how the body works. CHARACTER MUST BE PRESENT OR ABSENT (it is either there or not)J. Expo: dN/dt = rmaxN (N = indv, rmax= rate of growth, dN/dt = instantaneous growth rate over time) The slope of the graph will be steeper the larger the rate of growth.K. Survivorship curve = percent of orignal population that survives to a given age. Type 1, Type 2, Type 3L. Trade-offs: increase in reproduction comes with the cost of parental survival (due to limited resources, decrease offspring survival) Increae in reproduction leads to a decrease in the number of surviving parentsM. Number of species present and relative abundance of each speciesN. Eukarya, Bacteria, ArchaeaO. Contains biological macromolecules(DNA & protein), can reproduceP. large projection form the cell that helps to move or propel itQ. Spikes, that help the virus attach to the host cellR. Dominant: those species in a community that are most abundant or have the greatest biomass. Keystone: exert a strong influence on the structure of biological communities through crucial niches they occupyS. Abitoic= nonliving factors that affect the range and/or distribution of organisms (terrain, temperature, precipitation, sun, wind)T. is an assemblage of populations of various species living close enough for potential interaction. |
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