Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Describe the Morphological Characteristics?
One of the first steps in the identification of bacteria in food is microscopic examination to ascertain the shape, size, aggregation, structure and staining reactions of the bacteria present. The following characteristics may be of special significance:
Encapsulation: The presence of capsules or slime may account for sliminess or ropiness of a food. Most capsules are polysaccharides of dextrin; dextran or levan and they serve as a source of reserve nutrients and increase the resistance of bacteria under adverse conditions.
Formation of Endospores: Bacteria of genera Bacillus, Clostridium, Sporosarcina etc have the ability to form endospores. Endospores are formed at an intracellular site and are resistant to heat, ultraviolet light and desiccation. Lysis of the vegetative cell releases the free endospore, which may remain dormant with no detectable metabolism for years. Sporulation usually appears in the late logarithmic phase of growth, possibly because of nutrient depletion or product accumulation. The acquisition of heat resistance is closely related to the formation of dipicolinic acid and the Ca2+ uptake. Germination is favoured by conditions that are favourable for growth.
Formation of Cell Aggregates: It is characteristic of some bacteria to form long chains or of others to clump under certain conditions. It is more difficult to kill all bacteria in intertwined chains or sizable clumps than to destroy separate cells.
Q. Illustrate the major cells of the nervous system? The major cells of the nervous system are the neurons. as well the neurons the nervous system is also constituted of glial
Preputial prolapse This deformity is seen in some of the tropical zebu breeds but is not uncommon in European breeds. Initially, it begins as a temperory eversion of a small p
LOCOMOTION IN EARTHWORM - By contrection & relaxation of muscles waves are formed in body, generally from posterior to anterior. Setae are helpfull in locomotion. Rate of lo
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Q. Medical Management of mitral regurgitation? Vasodilator therapy to reduce afterload may be beneficial in patients with chronic mitral regurgitation, but there is no evidence
how does chamaleon change its colour
A fish of genotype a/a; B/b is crossed to a fish whose genotype is A/a; B/b. What proportion of the progeny will be heterozygous for at least one of the genes? (Assume independent
Q. Illustrate Mitral Stenosis and Pregnancy ? Since mitral stenosis is often seen in young women, it is not uncommon to see young women with pregnancy complicated by mitral ste
Healthy Person X is walking on level ground. Which of the following is true for the knee extensor muscle of X's right leg during the step cycle? A. The right knee extensor mus
What are cilia and flagella? Cilia and flagella are structures found in prokaryotes as well in eukaryotic cells. They play defense, nutrition and movement roles for the cell. I
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd