Prokaryotic Cells 0.0 / 5 ? BiologyCellular processesA2/A-levelAQA Created by: RinkyPereraCreated on: 26-09-17 18:38 What does "pro" mean? Before 1 of 14 What does "karyo" mean? Nucleus 2 of 14 What isn't enclosed within a nuclear membrane? Heredity material (DNA) 3 of 14 What are the two groups the absence of nucleus only occurs? Bacteria and blue green algae (cyanobacteria) 4 of 14 What are the five structures that are always present in prokaryotic cells? Cell wall, plasma membrane, cytoplasm, ribosomes, circular DNA 5 of 14 What is the flagellum used for in a bacterial cell? Used for locomotion 6 of 14 What is the nucleoid? Large circle of DNA 7 of 14 What is mesosome? Unfolsing of cell surface membrane involved in cell wall formation 8 of 14 What is pili? Hair-like projections for attachment to other cells 9 of 14 What is a plasmid? Small circular piece of DNA 10 of 14 What is the structure of the cell wall in a bacterium cell? 10-80mm thick. Made of amino acids and polysaccharides 11 of 14 What is the capsule? A mucilaginous layer of slime 12 of 14 What is gram positive? Gives positive result in gram stain test. Used to quickly classify bacteria into two broad categories according to their cell wall 13 of 14 What is gram negative? Doesn't retain the crystal violet stain used in gram staining method 14 of 14
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