Question

‘Lockjaw' disease is caused by______
A. Streptococcus
B. Clostridium
C. Pleurococcus
D. Salmonella

Answer 1

Hint: A disease that is easily transmitted from one person to another is called an infectious disease. Infectious disease is very common and every one of us suffers from this disease sometime or other. Some after infectious diseases like aids or fatal among noninfectious disease cancer are the major cause of death.

Complete answer:
Option A. Streptococcus: Bacteria like Streptococcus pneumonia and Hare Haemophilus influenzae is responsible for the disease pneumonia in humans which infects the alveoli of the lungs as a result of the infection, the alveoli get filled with fluid leading to serve problems in respiration. The symptoms of pneumonia include fever, chills, cough, headache. In severe cases, the lips and fingernails may then gray to bluish. A healthy person may be infected by droplets release.
Dysentery plague, diphtheria, etc are some other bacterial diseases in man.
Option B. CLOSTRIDIUM
Tetanus is caused by clostridium tetanus aerobic, gram-positive endospore-forming rod. The spores of clostridium retain are commonly found in hospital environments, in soil and don’t, and in feces of many farm animals and humans.
Transmission to humans is associated with skin wounds, any break in the skin can allow clostridium to retain sports to enter. If the oxygen tension is low enough, the spores generate and release the neurotoxin tetanospasmin. Tetanospasmin. is an endopeptidase that selectively cleaves the synaptic vertical membrane protein synaptobrevin. This prevents exocytosis and release of inhibitory neurotransmitters at synapses within the spinal cord and mortar nerves. The result is the uncontrolled Stimulation of skeletal muscles. a second toxin, tetanolysin, is hemolysis. That aids tissue destruction.
Early in the course of the disease, tetanospasmin courses tension or cramping and twisting in the skeletal muscle surrounding the wound tightens of the muscled jaw with more advanced disease, there is trismus, an inability to open the mouth because of the spasm of the master muscle. Facial muscles may go into known risks, sardonic us spasms or contractions of the trunk and extreme muscles may so serve that there is a board like rigidity, painful tonic convolutions, and backward bowing of the black so that the heels and back approach each other. Death usually results from the spasms of the diaphragm and the intercostal respiratory muscles.
Option C. PLEUROCOCCUS:
Genus of green algae species sometimes forms a thin green covering that prefers water loss. Each cell contains large dense chloroplasts either lobes or plate-shaped. Reproduction is by vegetative cell division only.
Option D. SALMONELLA:
Salmonella typhi is a pathogenic bacterium Salmonella typhi fever in human beings. These pathogens generally enter the body through contaminated food and water and also to other organs through blood. sustained high fever(39°-40°C). Weakness, stomach pain, corruption, headache, and loss of appetite are some of the common symptoms of the disease and death may occur in severe cases.

So, option B is the correct answer.

Note: Prevention of tetanus involves the use of tetanus taxied. The taxoid, which incorporates an adjuvant to increase its immunizing potency is given routinely with diphtheria toxoid acellular B pertussis vaccine. A unit normally is normally administered at 2 months after birth, a second dose 4 months later, 3rd does six months later, 4th does 18months later. And booster doses are given between the ages of 4-6 yrs, again at around age in and every 10yrs afterward.