Competitive Exams: Revision Terminology Part 26

  • 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)

    1. Meningitis in children (6 weeks – 2 years old)

    2. 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