What symptoms does a virus-infected plant show?
Key Terms
Potato spindle tuber disease is caused by
Viroids
What are viroids?
Low molecular weight Free RNA
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| Term | Definition |
|---|---|
What symptoms does a virus-infected plant show? | Leaf rolling and curling, mosaic formation, yellowing and vein clearing, dwarfing and stunted growth |
Who discovered viroids? | T.O. Diener |
Potato spindle tuber disease is caused by | Viroids |
What are viroids? | Low molecular weight Free RNA |
What do viroids lack that all viruses have? | Protein coat |
What kind of infections do prions cause? | Neurological diseases |
Prions have a size similar to what? | Viruses |
What is a prion? | Abnormally folded protein |
Bovine spongiform encephalopathy is caused by | Prion |
Bovine spongiform encephalopathy is also known as | Mad cow disease |
Cr-Jakob disease is cause by | Prions |
What is the analogue of mad cow disease in humans | Cr- Jakob disease |
Pliny's classification of plants is based on | Stem |
Which kingdoms were included in the three kingdom classification? | Protista, Animalia, Plantae |
Which kingdoms were included in the four kingdom classification? | Monera, Protista, Animalia, Plantae |
What was Carl Woese studying which made him develop the six kingdom classification? | 16s r-RNA gene |
Who gave the three domains of life? | Carl Woese |
Chromosomes are absent in | Monerans |
Why can archaebacteria survive in harsh conditions? | Due to absence of peptidglycans |
Which group of monerons have introns? | Archaebacteria |
In archaebacteria, membrane lipids are linked to | Esters |
In eubacteria, membrane lipids are linked to | Ether |
L glycerol phosphate is found in the membrane lipids of which monerans? | Archaebacteria |
D glycerol phosphate is found in the membrane lipids of which monerans? | Eubacteria |
Thermoacidophils oxidise sulphur to | Sulphuric acid |