5236 Biology Praxis Exam Questions and Answers 100% Pass

5236 Biology Praxis Exam Questions and Answers 100% Pass What is Interphase? - mainly growth of a cell occurs in this phase rather than cell division - most cells live here - except cancer What is Mitosis? active cell division What is the G1 phase (growth phase)? - Occurs within interphase - most of cell's life - more organelles & proteins What is the S phase (synthesis)? -DNA replication of 23 pairs (half from mom & half from dad) - results in 46 pairs What is the G2 Phase (Growth Phase 2)? -more directly preparing for M -make microtubules What is the G0 phase? -no more cell division - cells just grow - ex. neuron What is a Niche? An organism's particular role in an ecosystem, or how it makes its living. What is an Ecosystem? A biological community of interacting organisms and their physical environment. What is Abiotic? Non-living things What is Biotic? living things What is a Biome? A group of ecosystems with similar climates and organisms What is a Community? All the different populations that live together in an area What is a Species? A group of similar organisms that can breed and produce fertile offspring. What is Binary fission? A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size (usually in prokaryotes) What is External fertilization? Fertilization that occurs outside the body of an organism. The sperms and eggs are released in an external environment. Usually requires a body of water Who is Antoni van Leeuwenhoek? He discovered both protists and bacteria. Advancing the field of microscopy through the discovery of microorganisms. What is Commensalism? A relationship between two organisms in which one organism benefits and the other is unaffected What is Mimicry? The resemblance of one species to another species What is Mutualism? A relationship between two species in which both species benefit (symbiotic relationship)