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Biology Unit 1 Notes

For exam revision, extended notes can be found in my workbook.

QuestionAnswer
What does the acronym M.R.S.G.R.E.E.N stand for? - Movement - Respiration - Sensitivity - Growth - Reproduction - Equilibrium (Homeostasis) - Excretion - Nutrition
What is (the 3 characteristics of) cell theory? - all living things are made of cells - all cells come from already existing cells - cells are the smallest living things
Describe a eukaryote: Cell with membrane-enclosed organelles. Larger than prokaryotic cells. Multicellular. Nucleus with linear DNA.
Describe a prokaryote: Doesn't have membrane-bound organelles (still have membranes). Smaller and less complex than eukaryotes. Singular circular chromosome (called a nucleoid). Usually unicellular.
What are the 6 domains and Kingdoms of life? Animalia Plantae Fungi Protista Bacteria Archaea
Are they eukaryotic or prokaryotic? Animalia = eukaryotic Plantae = eukaryotic Fungi = eukaryotic Protista = eukaryotic Bacteria = prokaryotic Archaea = prokaryotic
What is binary fission? It's how prokaryotic cells reproduce, i.e. a cell splits in two to create a new organism.
What is mitosis and meiosis? Mitosis - DNA from the nucleus splits in two to create a new cell. Meiosis - sexually reproducing, like sperm and egg cells.
What are the scientific ethical issues/concepts? Integrity Justice Non-maleficence Beneficence Respect
Created by: sarah.hamill
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