Mycoplasma: Introduction, Morphology and Biochemical Reactions
Introduction Smallest micro organisms Free living in nature Can grow in cell free medium Causes human infection M. pneumoniae: Pneumonia Ureaplasma urealyticum: non-gonococcal urethritis M....
Stages and Features of antigen-antibody reactions
Introduction The combination of antigens (Ag) and antibodies (Abs) occur specifically and in observable manner. There is various usefulness of this type of reaction. Some...
Yersinia pestis: Introduction and morphology
Introduction Formerly known as Pasteurella pestis. Falls in family enterobacteriaceae. Discovered in Honkong in 1894 AD by Yersin and Kitasato. Important medical species are Y.pestis,...
Differences between Anthrax bacilli and Anthracoid bacilli
S.N Anthrax bacilli S.N Anthracoid bacilli 1. All are non-motile. 1. Generally, are motile. 2. Presence of capsule. 2. Absence of capsule. 3. Growth occurs...
Differences between Streptococcus pneumoniae and Viridans streptococci
S.N Streptococcus pneumoniae S.N Viridans streptococci 1. Are capsulated. 1. Are non-capsulated. 2. Shape is lanceolate or flame shaped. 2. Shape is oval...
Differences between Flagella and Pili
S.N Flagella S.N Pili 1. These are helical structures but are not straight. 1. These are non-helical structures but are straight. 2. These are long...
Differences between pili and fimbriae
S.N Pili S.N Fimbriae 1....
Differences between action potential and graded potential
S.N Action potential S.N Graded potential 1. It is the electrical potential change that occurs when impulse transmits along the membrane of the nerve or...
Cough, sneezing and swallowing reflexes
Introduction These are collectively called respiratory protective reflexes. Protects lungs and air passage from foreign particles. These reflexes modify respiratory process so that elimination of foreign...
Non-respiratory functions of respiratory tract
Various non-respiratory functions are also shown by respiratory tract. Not only gaseous exchange that is the primary function of it. Lungs show defense barrier and...