1) How big are bacteria cells? a) Commonly around 1µm b) Commonly less than 1µm c) Commonly larger than 2µm d) Commonly around 3µm 2) What type of cells are bacteria? a) Prokaryotes b) Eukaryotes c) Stem cells 3) Typically, bacteria cells present in one of how many shapes? a) 2 b) 3 c) 4 d) 5 4) The capsule of a bacteria cell... a) Contains cell structures like plasmids, ribosomes and a chromosome. b) Made of a semi-permeable membrane layer of phospholipids c) Acts as an extra layer of defence from phagocytosis and drying out 5) Gram positive bacteria... a) Will not stain with purple dye b) Will stain blue/purple 6) Gram negative bacteria... a) Makes infection much harder to treat b) Has one thick peptidoglycan wall 7) What substances are contained within the plasma membrane? a) Cytoplasm, flagellum, pili, ribosomes b) Cytoplasm, nucleoid, ribosomes, plasmid 8) What is within the nucleoid? a) Bacterial chromosome, DNA, RNA within a nuclear membrane b) Bacterial chromosome, DNA, RNA without a nuclear membrane 9) What is the purpose of a mesosome? a) Decreases the surface area of the cell and helps with respiration, DNA replication and cell division b) Increases the surface area of the cell and helps with respiration, DNA replication and cell division 10) Where is the bacterial chromosome located? a) In the nucleoid, containing genes necessary for cellular functions b) In the cytoplasm, containing the nucleoid 11) What are the small circular DNA molecules within the cytoplasm? a) Plasmid - can self replicate and help bacteria survive stressful situations b) Ribosomes - essential in protein synthesis 12) What do some bacteria cells have to aid with movement of the cell? a) Pili - hair like structures that help bacteria cells attach to their host b) Flegellum - works like a propellor to move towards food and away from anything toxic

Structure and function of bacteria cells

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