Biology

Antibiotics and Immunity

859 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

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 spots
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

These are strong chemical substances that are applied on spots and places where germs thrive an multiply and places where germs thrive and multiply.commonly used disinfectants are cresol,phenol,Lysol,40% formalin,lime,Bordeaux mixture, DDT etc. Precaution-all disinfectants are strong and should not come in contact with the human skin. Strong heat and boiling also destroy germs and may be called physical disinfectants.deodorants are neither antiseptics nor disinfectants.they only serve to mask a bad smell.

So, the correct answer is 'Phenol is a disinfectant'.

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

A person applies hydrogen peroxide on his wound. This is to kill

  1. Anaerobic bacteria

  2. Aerobic bacteria

  3. Fungi

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

A person applies hydrogen peroxide on his wound. This is to kill anaerobic bacteria. Anaerobic bacteria cannot survive in the presence of oxygen. The hydrogen peroxide bubbling releases oxygen. Hence, due to the released oxygen, anaerobic bacteria will be killed. However, it also affects the healthy cells of the body. This in turn slows down the process of wound healing.

Thus, the correct answer is 'Anaerobic bacteria.'

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

Antiseptics are

  1. hormones

  2. enzymes

  3. chemical substances

  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.

Multiple choice bio-chemistry diseases and immunity antibodies antibodies and antitoxin antigen and antibody

Body's defence system produces antibiotics.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Body's defence system produces antibodies.
  • Antibodies are produced when an allergen or a foreign substance enters the human body by the immune system.
  • It protects the body from unwanted foreign particles which enter the body.
  • So, the correct answer is 'False'.
Multiple choice bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

Which of the following mechanism is disrupted by the antibiotic tetracycline which works by binding to rRNA in prokaryotes?

  1. Translation

  2. Respiration

  3. Transcription

  4. DNA replication

  5. Active transport
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetracycline antibiotics are the protein inhibitors which inhibiting the binding of aminoacyl-tRNA to the mRNA-ribosome complex and prevents the translation (protein synthesis) as activated aminoacyl-tRNA bring amino acid in mRNA-ribosome complex.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

Drug  for a medical treatment is obtained from organism.Find the correct option

  1. Heart-Penicillium

  2. Organ transplant-Trichoderma

  3. Swine Flu-Monascus

  4. AIDS-Pseudomonas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Trichoderma is a genus of fungi in the family Hypocreaceae.
  • Cyclosporine A (CsA), a calcineurin inhibitor produced by the fungi Trichoderma polysporum is an immunosuppressant prescribed in organ transplants to prevent rejection.
  • Hence Drug for medical treatment is obtained from organism Trichoderma.
  • So, the correct answer is 'Option B'.
Multiple choice introduction to twentieth century and world war one the twentieth century and great war history

What was the very first antibiotic?

  1. Cephalosporins

  2. Penicillins

  3. Tetracyclines

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

Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming. There are several enhanced penicillin families which are effective against additional bacteria; these include the antistaphylococcal penicillins, aminopenicillins, and the antipseudomonal penicillins. They are derived from Penicillium fungi.

Multiple choice introduction to twentieth century and world war one the twentieth century and great war history

Antibiotics are powerful medicines that help to fight:

  1. Viruses

  2. Bacteria

  3. Protozoa

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

Antibiotics are medicines that treat bacterial infections. They do not cure infections caused by viruses, such as the common cold or flu. Taking antibiotics when you do NOT need them can prevent them working when you DO need them.

Multiple choice some infectious diseases infectious diseases health and diseases biology

Treatment of cholera includes _________

  1. Oral rehydration solution

  2. Antibiotics

  3. Zinc supplementation

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

The primary treatment is oral rehydration therapy - the replacement of fluids with slightly sweet and salty solutions rice-based solutions are preferred. Zinc supplementation is useful in children. In severe cases, intravenous fluids, such as Ringer's lactate, may be required, and antibiotics may be beneficial.

Multiple choice zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

Which of the following is not a natural way of destroying bacterial infection?

  1. Antibodies produced in the body.

  2. Production of HCl in the stomach.

  3. Antibiotics taken orally or by injection.

  4. Phagocytosis by WBCs.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The natural way of destroying the bacterial infection is the production of the antibodies by the plasma B-cells in the body. The production of HCl also kills the harmful bacteria. The WBCs are the cells which can phagocyte and destroy the bacterial cells.

The intake of antibiotics is not the natural way.
Thus, the correct answer is option C. 

Multiple choice biology wastewater story basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this? water borne disease hygiene - a key to healthy life

Secondary treatment reduces bacterial load, ranges from

  1. 90-100%

  2. 80-98%

  3. 40-60%

  4. 10-30%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secondary biological treatment is highly effective at reducing the organic load and bacterial content of sewage, typically achieving a reduction in the range of 80 to 98 percent.

Multiple choice biology classification of plants monera five kingdoms of living organisms biodiversity and need of classification

Bacteria having comma-like single curve in their body are

  1. Bacilli

  2. Cocci

  3. Vibrio

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

Bacteria having rod shaped structure are called as Bacilli. Examples include Clostridium tetani, Corynebacterium. Bacteria that are round in shape are called as cocci. Examples include Streptococcus pneumoniae, Staphylococcus aureus. Bacteria having comma-like single curve in their body are Vibrio. Examples include Vibrio cholerae, Vibrio vulnificus. Bacteria having spiral shape are called as Spirilla. Examples include Spirillum, Campylobacter.

Thus, the correct answer is 'Vibrio.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Anticoagulant substance in endospore of bacteria is found in 

  1. Exosporium and spore coat

  2. Spore coat and cortex

  3. Cortex and core wall

  4. Cortex and cytoplasm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Endospore of bacteria is mainly covered with three extra layers: 

Exosporium, spore coat and cortex.
Exosporium and spore coat are made of proteins, whereas cortex is made of modified peptidoglycans. Peptidoglycans are coagulants.
Proteins are anticoagulants hence found in exosporium and spore coat.
So the correct answer is ' Exosporium and spore coat'.