Tag: first aid

Questions Related to first aid

Which of the following statement is incorrect about antibiotics?

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Coined by Waksman (1942)

  2. Produced by microorganisms

  3. Produce allergy in some persons

  4. Cure all diseases

Show answer
Correct Option: D
Explanation:

Antibiotic is a medicine which inhibits the growth of microbes. This term was coined by Selman Waksman. They are produced by many bacteria, fungi, and other microorganisms. Some of them increase the activity of mast cell resulting into allergy. They are specific for the disease.

So, the correct answer is 'Cure all diseases'

Match the following and find the correct option.

I II
(a) Cristian Haneen (i) Vaccination
(b) Waksman (ii) Penicillin
(c) Edward Jenner (iii) Purification of enzyme zennet
(d) Alaxander Fleming (iv) streptomycin
biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. a-iv, b-i, c-ii, d-iii

  2. a-iii, b-i, c-iv, d-ii

  3. a-iii, b-ii, c-i, d-iv

  4. a-iii, b-iv, c-i, d-ii

Show answer
Correct Option: D
Explanation:

(A)Cristian Haneen verified the Purification of enzyme zennet.

(B)Waksman discovered Streptomycin.
(C)Edward Jenner discovered Vaccination.
(D)Alexander Fleming discovered Penicillin.
So, the correct option is 'a-iii, b-iv, c-i, d-iii'.

The term antibiotic was coined by

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Fleming

  2. Waksman

  3. Funk

  4. Jenner

Show answer
Correct Option: B
Explanation:

Selman Waksman, the microbiologist who discovered streptomycin, first used the word "antibiotic" in the medical sense in 1943. 

So the correct answer is 'Waksman'

Which of the following statement is correct?

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Activated sludge is digested by anaerobic bacteria to produce marsh gas.

  2. Aspergillus niger produces cyclosporin A.

  3. Fleming, Chain and Florey were awarded Nobel Prize for discovering penicillin.

  4. BOD is amount of oxygen produced by bacteria during decomposition.

Show answer
Correct Option: C

Which of the following statements regarding antibiotics is not correct?


i) Antibiotic is the attenuated microorganisms which in small concentrations, can kill or retard the growth of other harmful microorganisms.
ii) Penicillin was the first antibiotic to be discovered by Alexander Fleming (1928) while working on bacterium Staphylococcus aureus.
iii) The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.
iv) Fleming, Chain, and Florey were awarded the Nobel Prize in 1945.

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. (i) Only

  2. (iii) Only

  3. (ii) and (iv)

  4. (i), (iii) and (iv)

Show answer
Correct Option: A
Explanation:
  • Antibiotics are antimicrobials that are released by bacteria, fungi or molds naturally or are synthesized artificially that are capable of killing or inhibiting competing microbial species. They are therefore antimicrobial substances and not entire microorganisms that are used. 
  • In 1928 penicillin, the first true antibiotic was discovered by Alexander Fleming from colonies of Staphylococcus bacteria. However, its full potential as an antibiotic was established by Florey and Chain. Howard Florey, Ernst Chain, and Sir Alexander Fleming received the Nobel prize for their work on penicillin in 1945. 
  • So, the correct answer is '(i) only'.

Penicillin kills bacteria by ________________.

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Suppression of clef-wall synthesis

  2. Lyses of protoplasm

  3. Interfering with RNA synthesis

  4. Inhibiting DNA synthesis

Show answer
Correct Option: A

Name an antibiotic manufactured from fungi.

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Penicillin

  2. Streptomycin

  3. Amoxicillin

  4. Ampicillin

Show answer
Correct Option: A
Explanation:

Penicillin, one of the first and still one of the most widely used antibiotic agents, derived from the Penicillium mold. Streptomycin is produced from Streptomyces griseus bacteria. Ampicillin and Amoxicillin are synthetic antibiotics. So the above-selected option is correct 

Match column-I with Column-II and select the option having correct matching.

Column-I Column-II
A. Streptokinase i. Penicillium notatum
B. Statins ii. Monascus purpureus
C. Cyclosporin-A iii. Streptococcus
D. Penicillin iv. Trichoderma
biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. A-i, B-ii, C-iii, D-iv

  2. A-iii, B-ii, C-i, D-iv

  3. A-iii, B-ii, C-iv, D-i

  4. A-iv, B-ii, C-iii, D-i

Show answer
Correct Option: C

An antibiotic such as penicillin

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Kills pathogenic bacteria

  2. Prevents pathogenic bacteria from reproducing

  3. Works against infectious viruses

  4. Inhibits the reproduction of retroviruses

  5. Both A and B

Show answer
Correct Option: E
Explanation:
Antibiotics function by blocking vital processes in bacteria, killing the bacteria, or stopping them from multiplying. This helps the body's natural immune system to fight the bacterial infection. Antibiotics that affect a wide range of bacteria are called as broad spectrum antibiotics (e.g., amoxicillin and gentamicin). Antibiotics that affect only a few types of bacteria are called as narrow-spectrum antibiotics (e.g., penicillin). Penicillin is bactericidal. A bactericidal antibiotic usually either interferes with the formation of the bacterium's cell wall or its cell contents. A bacteriostatic antibiotic stops bacteria from multiplying. An antibiotic is given for the treatment of an infection caused by bacteria. Antibiotics target microorganisms such as bacteria, fungi and parasites. However, they are not effective against viruses.

The wonder drug penicillin was discovered by

biology aids to health antibiotics and their uses common health care methods immunization, treatment and antibiotics first aid

  1. Louis Pasteur

  2. Alexander Fleming

  3. Edward Jenner

  4. Jonas Salk

Show answer
Correct Option: B
Explanation:

Penicillin was discovered in London in September of 1928 by Dr. Alexander Fleming, the bacteriologist on duty at St. Mary’s Hospital. The discovery of penicillin has often been described as a miracle drug because prior to the discovery of penicillin, death could occur in very trivial injuries and diseases.