Microbiology Flashcards
(27 cards)
What cell type do bacteria have?
Prokaryotic
What are cells containing membrane-bound organelle and a true nucleus are called?
Eukaryotic
There are two parts of naming of an organism. This is known as?
Binomial classification.
When referring Candida albicans, what is the part that contains the Genus?
Candida
What is the process called that bacteria reproduce?
Binary fission.
What is a group of bacteria that has grown as a visible ‘dot’ on an agar plate from one parent cell, and is visible to the naked eye?
Colony.
What are round purple bacteria seen under the microscope called?
Gram positive cocci
What are rod-shaped, pink bacteria seen under the microscope are called?
Gram negative bacilli
What is The magnification used to observe Gram stained bacteria?
x1000
What is the bacterial structure that dictates whether a bacterial cell will stain Gram positive or Gram negative?
Cell wall
What would you call a viral disease presenting with a skin rash and fever?
Acute lytic viral infection.
Shingles in a reactiviation of the Varicella zoster virus. Shingles would be best classified as a reactivation of?
A latent viral infection.
Where do viruses replicate?
Some viruses use the host cell to replicate.
What is one of the most effective ways to prevent the spread of many viral infections?
It is vaccination where you activate the immune system by exposing the host to an attenuated (weakened) or inactivated form of the virus.
What is called when a pathogenic fungi have invaded an immunocompromised patient?
Systemic infection
True or false. A systemic mycoses relates to fungal infection in the whole body or multiple organs.
True.
Why is it difficult to treat a systemic fungal infection?
Difficult to find points of selective toxicity. Fungal and human cells are both eukaryotic.
Who is susceptible to acquiring systemic mycoses?
Severely compromised infants in intensive care.
What cell type does a protozoa have?
Eukaryotic
What are microorganisms that do active feeding and reproducing within a host cell?
Trophozoites
How are protozoa spread?
contaminated food and insects.
What form of protozoa can survive for long periods of time in the environment?
cyst
What type of ectoparasites that live outside the human body?
Mites (Scabies) and lice
How do children become infected with threadworm?
If they ingest threadworm eggs.
