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Microbiology: Definitions and explanations page 1 PDF | Download eBooks

Learn microbiology terms with definitions and explanations, microbiology terminologies (Page 1) for science degree programs.


  1. What is Bright-Field Microscope?
    Bright-field microscope is a simple optical microscope in which the illumination from the sample is transmitted ...
  2. What is Capsule Staining?
    Capsule staining is a technique that is used to reveal the absence or presence of capsules. ...
  3. What is Atomic Force?
    Atomic force microscopy (afm) also known as scanning force microscopy (sfm) is a type of scanning ...
  4. What are Cocci?
    Cocci is the plural for coccus, which is a term used for a bacterium or archaeon ...
  5. What is Cell Envelope?
    Cell envelop consists of the cell wall and the inner cell membrane of bacteria. an outer ...
  6. What is Active Transport?
    Active transport is a process in which energy is required to move the molecules across a ...
  7. What is Antiport?
    Antiport is a process in which a cell moves an ion across the membrane, down the ...
  8. What is Cell Wall?
    A cell wall is an organizational layer that surrounds a few types of cells outside the ...
  9. What is Capsule?
    The capsule is a part of bacterial structure, which is composed of polysaccharide, and the layer ...
  10. What is Curing?
    Curing is a process in which the bacterial cell loses its plasmid. there are multiple methods ...
  11. What is Chemotaxis?
    The movement of an organism, in response to a chemical stimulus is known as chemotaxis. the ...
  12. What are Chemoreceptors?
    A chemoreceptor, also called a chemo sensor, is a specialized sensory that converts a chemical substance ...
  13. What are Cannulae?
    Cannulae are tubelike structures, which are hollow and are present on the surface of thermophilic archaea ...
  14. What are Actin Filaments?
    Actin filaments are the linear polymers of g-actin subunits or globular actin subunits and are present ...
  15. What is Autophagosome?
    An autophagosome is a round in shape and structure having twofold layer membranes. it is the ...
  16. What is Chromatin?
    Chromatin, found in eukaryotic cells, is a complex of protein and dna. its basic function is ...
  17. What is Bacteriophage?
    Bacteriophages are types of viruses, which infect only bacteria. the literal meaning of word bacteriophage is ...
  18. What is Cell Cycle?
    Cell cycle is divided into two main stages in eukaryotes and these stages are mitotic (m) ...
  19. What are Autolysins?
    Autolysins are enzymes that act against bacteria and digest the cell- wall peptidoglycan of the bacterial ...
  20. What are Compatible Solutes?
    Compatible solutes or osmoprotectants are small organic molecules of low toxicity with a neutral charge at ...
  21. What are Acidophiles?
    Acidophiles/acidophilic are the organisms, which grow under extreme acidic conditions. the growth of acidophilic organisms is ...
  22. What are Alkaliphiles?
    Alkaliphile is a term that is used for those microorganisms, which optimally grow between the ph ...
  23. What is Culture Medium?
    Culture medium, also known as growth medium, is a liquid, solid or semi-solid designed to sustain ...
  24. What is Complex Media?
    A complex medium is a combination of sugar and extracts, resulting in a medium, which is ...
  25. What is Colony?
    Colony is defined as numerous individual organisms, especially of the same species, living together in a ...
  26. What is Continuous Culture System?
    The continuous culture system is initiated as a batch culture where the growth continues through the ...
  27. What is Antimicrobial Agent?
    Antimicrobial agents that either kill or stop the growth of microorganisms. these agents can be chemical, ...
  28. What is Antisepsis?
    Antisepsis is a term that is used for preventing infection either by obstructing the multiplication and ...
  29. What is Chemotherapy?
    Chemotherapy is a cancer treatment technique, in which one or more anti-cancer drugs are used, as ...
  30. What is Calorie?
    Calorie is a unit to measure energy. the gram calorie or the small calorie, denoted as ...
  31. What is Catalyst?
    Catalysts are those substances which when added to a reaction speeds up the rate of reaction ...
  32. What is Activation Energy?
    Activation energy is the amount of energy that is needed to bring together the reacting molecules ...
  33. What is Active Site?
    Active site is present on the enzyme to which the substrate binds to form the enzyme-substrate ...
  34. What is Competitive Inhibitor?
    Competitive inhibitors are from the category of enzymes called reversible inhibitors. reversible inhibitors dissociate the enzyme-inhibitor ...
  35. What are Chemolithoautotrophs?
    Chemolithoautotrophs are those organisms that obtain their necessary carbon, required for metabolic processes from carbon dioxide ...
  36. What are Chemoorganoheterotrophs?
    Chemoorganoheterotrophs are the organisms that require organic substrates to obtain the carbon reuired for their growth ...
  37. What are Chemolithoheterotrophs?
    Chemolithoheterotrophs are those organisms, which get their energy either from inorganic minerals or from other geological ...
  38. What are Amphibolic Pathways?
    Amphibolic is a term that is used to describe a biochemical pathway, which involves both anabolism ...
  39. What is Aerobic Respiration?
    Aerobic respiration is process in which cellular energy is produced by using oxygen. roughly 36 atp ...
  40. What is Anaerobic Respiration?
    Anaerobic respiration is the one in which glucose is broken down to release energy in the ...
  41. What are Chlorophylls?
    Chlorophylls are the several related green pigments that are present in the mesosomes of cyanobacteria and ...
  42. What is Anoxygenic Photosynthesis?
    Anoxygenic photosynthesis is a type of photosynthesis in which light is trapped converted to atp and ...
  43. What are Bacteriochlorophylls?
    Bacteriochlorophylls (bchl) are photosynthetic pigments or modified chlorophyll that are present in multiple phototrophic bacteria. in ...
  44. What is Amino Acid Activation?
    In the process of amino acid activation, the amino acids (aa) are transferred to their trnas. ...
  45. What are Chaperone Proteins?
    Chaperones are proteins that help in the assembly or disassembly and covalent folding or unfolding of ...
  46. What are Conditional Mutations?
    Conditional mutations can be described as those mutations, which have a less severe (wild type) phenotype ...
  47. What is Allele?
    Alleles are the variant or alternate forms of a gene. mostly genes consist of two alleles. ...
  48. What is Conjugation?
    Conjugation is the process by which genetic material is transferred from one bacterium to another through ...
  49. What is Competent Cell?
    Competent cells are those cells that can incorporate foreign dna in to their genome. e.coli cells ...
  50. What is Alignment?
    Alignment or sequence alignment is a technique to arrange the dna, rna or protein sequences so ...
  51. What are Comparative Genomics?
    Comparative genomics is a field that is related to the research in biology and compares the ...
  52. What are Ab Toxins?
    Ab toxins are the exotoxins that are made up of two components which are a and ...
  53. What are Accessory Pigments?
    Accessory pigments are the compounds, which absorb light. these pigments are found in organisms that photosynthesize ...
  54. What is Acetyl-CoA Pathway?
    The acetyl-coa pathway is a biochemical pathway that uses co2 as a source of carbon and ...
  55. What is Acetyl-Coenzyme A (Acetyl-CoA)?
    Acetyl-coa is a combination of coenzyme a and acetic acid. acetyl-coa is manufactured by several catabolic ...
  56. What is Acid-Fast?
    Acid-fast are the organisms or bacteria such as mycobacteria, whose cell walls contain lipid substances in ...
  57. What is Acid-Fast Staining?
    To be pasted (acid fast stain). ...
  58. What are Acidic Dyes?
    Acidic dyes are the ones that have groups, which are negatively charged or are anionic such ...
  59. What is Acquired Immune Tolerance?
    Acquired immune tolerance is a state in which the antigen, which were once considered as foreign, ...
  60. What is Acquired Immunity?
    Acquired immunity is the type of immunity, which is not innate and is developed when a ...