Competitive Exams: Revision Terminology Part 26

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  • Gram positive – Teichoic acid – bind metals, act receptor site for some metals or viruses, maintain at low pH
  • Gram negative – rich in lipids
  • T. B = Zid Nielsen (N)
  • Bacteria – volutin granules (metachromatic granules) – polymeta-phosphates
  • PHB – polyhydroxybutyrate – lipid like – for carbon – AIBERTSTAIN
  • Fe3O4 (Aquaspirillium magnetotactium) – orient along geomagnetic lines.
  • Endospore in Bacillus & Clostridium.
  • Bactria lack histone proteins plasmid – which confer resistance to antibiotics.
  • Colicins – resp for formation of proteins which kill the closely related species.
  • Bocterial DNA chr = episome (Jacob & Wollmann)
  • Chemoheterotroph = oxi – red reaction
  • Growat high temp – thermphilic
  • Growat low temp – peychrophilic
  • Growat medium temp – mesophilic
  • Anaerobic Breakdown of carbohydrate = fermentation
  • Most studied bacteria = E. Coli
  • Teichoic acid in cell wall of bacteria binds to Mg2 + & protect it from thermal injuries.
  • A mycoside (6,6 dimycolyl trehalose) = cord factor from myoeolic acid in T. B.
  • Bdellovibrio bacteriovores – bacteria predatory on other bacteria – purifies ganges river
  • X rays & Y – rays are bacteriocidal mechanism of replication of bacteria = cairn՚s model.
  • Bacteria endospome – some as method of survival & same as means of reproduction
  • Dipicolinic acid is pr. In all spores examined & in absent from all vegetative cells.
  • Dipicolinic acid is released, metabolic activity increases.
  • Common to fungi & bacteria – bacteria – chitinous cell wall, heterotrephic, absence of chlorophyll, haploid body
  • Fungi flagella – 2 single by 9 double fibrils.
  • Witches Broom – mycoplasmal infections – agaga, Cactus, groundnut, lucerre, strawberry
  • Cytophage, vibrio & cellulomonas – capable to damage cellulose of textile & cordage
  • Haemophilus influenza (Bacteria) – does not cause influenza (viral)
  • Meningitis in children (6 weeks – 2 years old)
  • Bacterial epiglottis (in older children)
  • Clostridium botulinum Botulirium – Hacced paralysis preceded by vomiting
  • Desulfovibrio desulfuricans ⇾ S ⇾ H2S reduce – anodic depolorisation
  • Methyl mercury is toxic to CNS & Fishes.
  • Crown galls/root galls/plant cancers – reduce nutrient flow in the plant.
  • Tiplasmid resp for tumour in A tumefaciens (only a part is injected & it carries the genetic information opines)
  • Other to genes with auxin & eytokinin – stimulate division of plant cells & cause tumiurs.
  • Cheese propionic acid provides flavour and CO2 causes hole in Swiss cheese.
  • Intial fermentation – S. cerevisaese
  • 20 fermentation - Acetobactor & Gluconobacter – (alc ⇾ CH3 CooH) – product of vinegar.
  • Term antibiotics by Waksman
  • Riboflavin – bye product of acetone fermentation
  • Mycoplasma – gp of in motile rods impermeable to basic dyes, cause TB & leprosy cell walls are lipid rich (true wax & glycolipids (mycosides) ) .
  • TB by tubercilin test (old tuber cilin by Koch by autoclaving tuberail bacilli & Cenc)
  • Refined method – tuberculin prep – purified protein derivative (PPD) = mantoux test
  • Q fever – rickettasae disease – coxiella brunette – by ticks, dairy product, airborne, droplet phenol & Hypochlorite = laborartory disinfectant.
  • Archacbacteria = oldest of the living fossils
  • Archacbacteria psuedomurien (resemble pepitodoglycan of enbacteria but contain NAG instead of nom)
  • Archebacteria & caubactia have originated from common ancient form = progenotes

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