Readers ask: Which Of The Following Bacterial Cells Would Best Be Able To Survive An Attack By An Antibiotic?

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Why do antibiotics kill prokaryotic cells?

Human cells do not make or need peptidoglycan. Penicillin, one of the first antibiotics to be used widely, prevents the final cross-linking step, or transpeptidation, in assembly of this macromolecule. The result is a very fragile cell wall that bursts, killing the bacterium.

How do antibiotics affect prokaryotic cells?

b. Antibiotics are simply chemicals that kill prokaryotic cells but do not harm eukaryotic cells. They are natural chemicals produced by fungi and bacteria that act to control their bacterial competitors. For example, streptomycin stops protein synthesis in prokaryotic cells by binding to their unusual ribosomes.

Why are eukaryotic cells unaffected by antibiotics in the tetracycline class?

They are “bacteriostatic” rather than cidal. Tetracyclines can also inhibit protein synthesis in the host, but are less likely to reach the concentration required because eukaryotic cells do not have a tetracycline uptake mechanism.

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Why Antibiotics are effective at killing bacterial cells but do not seem to have an impact on eukaryotic cells?

Systemic antibiotics are only effective against bacterial cells because they only target components found exclusively in cell walls. Because there are variations in the way different groups of bacteria construct their cell walls, antibiotics can be designed to selectively target specific species.

What are 4 possible side effects of using antibiotics?

Common side effects of antibiotics

  • nausea.
  • indigestion.
  • vomiting.
  • diarrhea.
  • bloating.
  • feeling of fullness.
  • loss of appetite.
  • stomach cramping or pain.

What is the best antibiotic for a bacterial infection?

Bacterial infections are treated with antibiotics such as amoxicillin, erythromycin and ciprofloxacin. There are many different types of antibiotic, with different ways of working; the choice depends on the type of infection you have. Fungi commonly cause skin infections such as athlete’s foot and ringworm.

Do antibiotics affect human cells?

Antibiotics can selectively target bacteria for eradication, leaving human cells unmolested, in several ways. Most bacterial cell walls contain a macromolecule called peptidoglycan, which human cells do not make or need.

Do antibiotics harm human cells?

Antibiotics are substances that kill bacteria without harming the cells of your body.

How do prokaryotic cells become antibiotic resistant?

Ways that bacteria acquire resistance: Mutation – Through the process of cell replication, some bacteria develop mutations that makes them resistant to antibiotics. Bacteria with the resistant mutation have a better chance of survival against antibiotics.

What type of cell is a bacteria?

Prokaryotic cells (i.e., Bacteria and Archaea) are fundamentally different from the eukaryotic cells that constitute other forms of life. Prokaryotic cells are defined by a much simpler design than is found in eukaryotic cells.

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What are tetracycline antibiotics used to treat?

Tetracycline is used to treat infections caused by bacteria including pneumonia and other respiratory tract infections;; certain infections of skin, eye, lymphatic, intestinal, genital and urinary systems; and certain other infections that are spread by ticks, lice, mites, and infected animals.

Which drugs are part of the tetracycline group of antibiotics?

Semi-synthetic tetracyclines are lymecycline, methacycline, minocycline, rolitetracycline, and doxycycline. There is one glycylcycline subclass agent, named tigecycline. Lastly, there is a class of newer tetracyclines that includes ervacycline, sarecycline, and omadacycline.

Why do painkillers not cure diseases?

Painkillers are chemicals that relieve the symptoms but do not kill the pathogens. Common examples include paracetamol and aspirin, which can relieve a headache or a sore throat. As only the symptoms are treated, your immune system still needs to combat the pathogen.

How do antibiotic resistant bacteria develop?

Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.

How do Antibiotics stop bacteria without harming human cells?

Official Answer. Antibiotics work by interfering with the bacterial cell wall to prevent growth and replication of the bacteria. Human cells do not have cell walls, but many types of bacteria do, and so antibiotics can target bacteria without harming human cells.

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