Biology

Antibiotics and Immunity

974 Questions

Prepare for your science sections with these questions on antibiotics and immunity. The hub covers various classes of antibiotics, their sources, and mechanisms of microbial resistance. It also addresses the human antiviral response.

Antibiotic classes and sourcesMicrobial resistance mechanismsAntiviral proteinsDisease treatments

Antibiotics and Immunity Questions

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Antiseptics can

  1. Protect the body from entry of germs

  2. Kill germs

  3. Has no effect on germs

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Antiseptics are mild chemical substances which when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body e.g., lysol, carbolic acid (phenol).

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Sulphonamides were used to treat microbial infection because they inhibit microbial growth by

  1. Inhibiting wall formation

  2. Competing with PABA required for synthesis of folic acid

  3. Breaking naked DNA of microbes

  4. Inhibiting union of ribosome subunits and preventing protein synthesis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A folic acid or folate used to synthesize nucleic acid. Sulpha drugs inhibit the enzyme dihydropteroate synthase by attaching on the active site. DHPP and p-aminobenzoic acid (PABA) reacts in the presence enzyme dihydropteroate synthase for the synthesis of folic acid in bacteria. The sulphonamides compete with the PABA required for the synthesis of folic acid.
So, the correct answer is option B.
Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease
A chemical used for preventing pathogenic growth in wounds

  1. Antiseptic

  2. Photolysis

  3. Growth rate of population

  4. Pollutant

  5. Trophic hormone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(A)Antiseptic is capable of preventing microbial infection

(B)Photolysis is a chemical reaction in which a compound is decomposed after absorbing a photon
(C)The growth rate of population is the measure of the number of individuals
(D)The pollutant is the unit that causes pollution
(E)A trophic hormone is a hormone that stimulates endocrine gland
So, the correct answer is 'Antiseptic'

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Agents used to kill microbes on living surfaces are called

  1. Disinfectant

  2. Tranquilizers

  3. Antiseptic

  4. Both A and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Disinfectants are antimicrobial agents, that are applied to non-living objects to destroy microorganisms.
Tranquilizers are drugs used to reduce anxiety, fear, tension, agitation and mental disturbances.
Antiseptics are the mild antimicrobial chemical substances, that are applied to living tissue/skin to reduce the possibility of infection, sepsis.
Thus, the correct answer is option C.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Antiseptics are

  1. Mild chemical substances

  2. Strong chemical substances

  3. Weak catalysts

  4. Strong enzymes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Antiseptics are the mild chemical, antimicrobial substance. It is make mild so that it cannot harm the tissues. It is applied to tissues or skin to reduce the infection e.g., hydrogen peroxide.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Antiseptics are 

  1. Taken orally

  2. Intravenously

  3. Applied on skin

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Antiseptics are mild chemical substances which when applied on the skin to kill germs. These substances are in such mild concentration that they cause no harm to the skin and body. Lysol, carbolic acid (phenol). Thus, the correct answer is option C.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Which of the following is an antiseptic?

  1. Lysol

  2. Carbonic acid

  3. Iodine

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Antiseptics are mild chemical substances which when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body e.g., lysol, carbolic acid (phenol), iodine. Thus, the correct answer is option D.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Antiseptics can

  1. protect the body from tentry of germs

  2. kill germs

  3. has no effect on germs

  4. all
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

These are mild chemical substances which, when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body. Lysol, carbolic acid (phenol), Iodine, benzoic acid, Mercurochrome, boric acid etc in dilute solution are good antiseptics. Certain antibiotic creams also serve the same purpose.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Which of the following is not an antiseptic?

  1. Phenol

  2. Mercurochrome

  3. LSD

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Lysol, carbolic acid(phenol),Iodine, benzoic acid,Mercurochrome,boric acid etc in dilute solution are good antiseptics.
LSD is one of the most potent, mood-changing chemicals. It is manufactured from lysergic acid, which is found in the ergot fungus that grows on rye and other grains.
So, the correct answer is 'LSD'
Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Mark the correct statement about disinfectants.

  1. All disinfectants are strong and should not come in contact with the human skin.

  2. Deodorants are neither antiseptics or disinfectants.

  3. Disinfectants are applied on spots and places where germs thrive and multiply.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Disinfectants are the chemical or antimicrobial substance that are applied to non-living objects such as floor to kill microbes e.g., phenol. Deodrants are the substance used to remove unpleasant bodily odour. Thus, the correct answer is option D.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Mark the correct statement.

  1. Antiseptic are strong germ killing substances.

  2. Iodine is an disinfectants.

  3. Phenol is a disinfectant.

  4. Disinfectant are applied on the body whereas antiseptic are applied on inanimate objects.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Disinfectants are chemical agents used to disinfect inanimate objects and surfaces e.g., phenol, cresol. Antiseptics are the mild chemical agents applied to living tissues to prevent infection e.g., hydrogen peroxide. Thus, the correct answer is option C.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Which of the following is an antiseptic

  1. Lysol

  2. Carbolic acid

  3. Iodine

  4. All
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

These are mild chemical substances which, when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body. Lysol, carbolic acid (phenol), Iodine, benzoic acid, Mercurochrome, boric acid etc in dilute solution are good antiseptics. Certain antibiotic creams also serve the same purpose.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Mercurochrome is a type of

  1. Disinfectant

  2. Antibiotic

  3. Antiseptic

  4. All
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

These are mild chemical substances which, when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body. Lysol, carbolic acid (phenol), Iodine, benzoic acid, Mercurochrome, boric acid etc in dilute solution are good antiseptics. Certain antibiotic creams also serve the same purpose. Dettol, savlon are all antiseptics.

So, the correct answer is 'Antiseptic'.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Dettol and savlon is also an

  1. Disinfectant

  2. Antibiotic

  3. Antiseptic

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
These are mild chemical substances which, when applied on the body, kill germs. These substances are in such mild concentration that they cause no harm to the skin and body. Lysol, carbolic acid (phenol), Iodine, benzoic acid, Mercurochrome, boric acid etc in dilute solution are good antiseptics. Certain antibiotic creams also serve the same purpose. Dettol, savlon are all antiseptics.
So, the correct answer is 'Antiseptic'.