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Unit 2 Biology Grade 9 Test Review Flashcards | Quizlet. What is the cell theory? Click the card to flip 👆. 1. All living things are made up of one (unicellular) or more cells (Muliticelluar) 2. Cells are the basic unit of life. 3. Cells are from pre-existing cells. Click the card to flip 👆. 1 / 57. Flashcards. Learn. Test. Match. Q-Chat.
Phosphate buffered saline (PBS) is a buffer solution commonly used in biological research. PBS is isotonic and non-toxic to cells. It is used in several applications of tissue culture, most notably for cell washing and trypsinization.
Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate , sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate .
28 sty 2019 · PBS or phosphate-buffered saline is a buffer solution that is particularly valuable because it mimic the ion concentration, osmolarity, and pH of human body fluids. In other words, it's isotonic to human solutions, so it's less likely to cause cell damage, toxicity, or unwanted precipitation in biological, medical, or biochemical research.
Biology Unit 2 (9th grade) What characteristics does something have to possess to be considered living? Click the card to flip 👆. Reproduction, requires energy, evolve, grow and develop, organization, composed of cell (s), maintain homeostatsis, respond to stimuli. Click the card to flip 👆.
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Covers everything from prokaryotic and eukaryotic cells to natural selection 👍 Learn with flashcards, games, and more — for free.
