Bacteria that are capable of causing a disease, e.g. Shallow dish with lid into which is placed a diphtheria, whooping cough and tetanus (3 in 1 nutrient medium for growing micro-organisms. vaccination) are all caused by bacteria. pathogenic bacteria petri-dish Small circular piece of DNA found in bacteria and An infectious agent made of one or more protein yeast. Often contains genes bestowing drug resistance. molecules but no RNA or DNA. They seem to act as catalysts converting normal protein into prions, e.g. – BSE and CJD. plasmid prion The fertile tip of a hypha of before it forms a Rhizopus Component of a virus surrounding one type of nucleic gametangium. acid. progametangium (plural = progametangia) protein coat Viruses that contain just one single strand of RNA and A root-like filament which attaches the mycelium of replicate the enzyme reverse transcriptase to copy some fungi to the substrate. Grows downwards into this RNA into a complementary single strand of DNA. substrate. It functions like a root it supports the – The single-stranded DNA is then copied, and the fungus and is involved in absorption. resulting double-stranded DNA is inserted into a chromosome of the host cell. retrovirus(es) rhizoid
Bacteria that are capable of causing a disease, e.g. diphtheria, whooping cough and tetanus (3 in 1 vaccination) are all caused by bacteria. pathogenic bacteria Shallow dish with lid into which is placed a nutrient medium for growing micro-organisms. petri-dish Small circular piece of DNA found in bacteria and yeast. Often contains genes bestowing drug resistance. plasmid An infectious agent made of one or more protein molecules but no RNA or DNA. They seem to act as catalysts – converting normal protein into prions, e.g. BSE and CJD. prion The fertile tip of a hypha of Rhizopus before it forms a gametangium. progametangium (plural = progametangia) Component of a virus surrounding one type of nucleic acid. protein coat Viruses that contain just one single strand of RNA and replicate the enzyme reverse transcriptase to copy this RNA into a complementary single strand of DNA. The single-stranded DNA is then copied, and the resulting double-stranded DNA is inserted into a chromosome of the host cell. retrovirus(es) A root-like filament which attaches the mycelium of some fungi to the substrate. Grows downwards into substrate. It functions like a root – it supports the fungus and is involved in absorption. rhizoid
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