Lesson 4 Flashcards
Why can only bacteria be treated with antibiotics?
Viruses and bacteria also have a different structure. Viruses are surrounded by a protein coating. They don’t have cell walls that can be attacked by antibiotics like bacteria does.
What is the best way to fight a virus?
“Using over-the-counter medications, drinking plenty of fluids and getting enough rest can help get you through until you’ve fought off the virus.”
What is the definition of immunity?
“In biology, immunity is the state of being insusceptible or resistant to a noxious agent or process, especially a pathogen or infectious disease. Immunity may occur naturally or be produced by prior exposure or immunization.”
Give an example of a “super bug” bacteria.
“Superbugs are strains of bacteria, viruses, parasites and fungi that are resistant to most of the antibiotics and other medications commonly used to treat the infections they cause.”
An example is methicillin-resistant Staphylococcus aureus (MRSA).
How is natural selection related to antibiotic resistance?
Artificial selection is similar to natural selection. During both processes traits change. This change is based on which organisms are likely to reproduce.
How does a cell create antibodies to defend itself from a virus?
Antibodies are produced by B cells (specialized white blood cells).
Antigen comes into contact with a B cell, which causes the B cell to divide and clone. These cloned B cells release millions of antibodies into your body.
