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Start learning 50% faster. Sign in nowAn antibiotic is a chemical substance, produced by micro-organisms, which has the capacity to inhibit the growth of and even to destroy bacteria and other micro-organisms. Alexander Fleming derived the first antibiotic, Penicillin, in 1928 from a fungi called Penicillium. Antigens are any substance that causes the body to make an immune response against that substance. Antigens include toxins, chemicals, bacteria, viruses, or other substances that come from outside the body. Antibodies are proteins that protect when an unwanted substance enters the body. Produced by one's immune system, antibodies bind to these unwanted substances in order to eliminate them from the system. Another word for antibody is immunoglobulin. An antiseptic is a substance that stops or slows down the growth of microorganisms. They're frequently used in hospitals and other medical settings to reduce the risk of infection during surgery and other procedures.
'Manoj' can complete some work alone in 40 days. 'Sohan' is twice as efficient as 'Rohan' and five times as efficient as 'Manoj'. If 'Manoj' and 'Rohan'...
‘A’ can complete a work in 18 days and is 10% more efficient than ‘B’. ‘A’ and ‘B’ start the work together, but ‘A’ leaves after 15 ...
‘M’ is 60% more efficient than ‘N’. ‘N’ started the work alone and worked for 20 days and after that ‘N’ is replaced by ‘M’. If the ...
A work can be completed by ‘A’ and ‘B’, alone in 18 days and 10 days, respectively. Find the number of days taken by ‘C’ to complete the sam...
A can complete a work in 15 days. B takes 6 days less than A to complete the same work. In how many days can both of them together complete 80% of the w...
A team of 40 men is assigned to finish a project within 24 days. They began the task simultaneously. To complete the project 6 days ahead of the planned...
A isthrice as efficient as B and can finish a piece of work in 32 days less than B. B can finish this work in how many days?
If 20 men or 12 boys can complete a job in 25 days, how long will it take for a team of 15 men and 18 boys to complete the same job? (Calculate approxim...
35 people working 7 hours a day take 22 days to complete a task. How many people working for 6 hours a day are needed to complete five times the given t...
