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NEET MDS Shorts

47501
Microbiology

The chemical nature of bacterial exotoxins is, a lipopolysaccharide complex

51861
Microbiology

Lactobacillus is an acidogenic genus found in deep dental caries, that often increases significantly in the saliva during periods of caries activity

80979
Microbiology

Most bacterial endotoxins are composed of lipoprotein-polysaccharide complexes

70112
Microbiology

Colonies of E. coli serotype O157:H7 appear on Mac Conkey Sorbitol Agar as colourless colonies non-sorbitol fermenter. Others E. coli, sorbitol fermenters, give red colonies and gram-negative non-sorbitol fermenters appear translucent.

38050
Microbiology

The main tool for the detection of "cases" of tuberculosis is 1. Sputum examination.

Explanation of Each Option:

  1. Sputum examination: This is the primary method for diagnosing active pulmonary tuberculosis. Sputum samples are collected and examined for the presence of Mycobacterium tuberculosis through microscopy (e.g., acid-fast bacilli staining) and culture methods. It is considered the gold standard for confirming active TB cases.

  2. Mantoux test: Also known as the tuberculin skin test, this test is used to determine if a person has been exposed to the tuberculosis bacteria. However, it does not diagnose active TB; rather, it indicates whether a person has been infected with the bacteria at some point.

  3. Chest X-ray: While chest X-rays are important for identifying lung abnormalities associated with tuberculosis and can support the diagnosis, they are not definitive for detecting the bacteria itself. They are often used in conjunction with sputum examination.

65193
Microbiology

The minimum and maximum temperature for normal metabolic activity microorganisms that live on or within the human body is 20° C to 45°C

69872
Microbiology

Dry heat sterilization of paper points without incineration is accomplished at 160°C for 2hours

16671
Microbiology

Two important factors for initiation of caries by oral streptococci are production of glucosyl transferase and synthesis of insoluble dextran

98570
Microbiology

The most efficient method of sterilization in dental practice is moist heat at 121°C for 20 min

46894
Microbiology

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