bakterie Flashcards
What are bacteria?
Bacteria are single-celled microorganisms that can be found in various environments.
True or False: All bacteria are harmful to humans.
False
Fill in the blank: Bacteria reproduce asexually through a process called _______.
binary fission
What is the primary component of a bacterial cell wall?
Peptidoglycan
Multiple Choice: Which of the following is a common shape of bacteria? A) Spiral B) Rod C) Sphere D) All of the above
D) All of the above
What is the role of plasmids in bacteria?
Plasmids are small DNA molecules that can provide bacteria with genetic advantages, such as antibiotic resistance.
True or False: Bacteria can perform photosynthesis.
True
What type of bacteria require oxygen to survive?
Aerobic bacteria
Fill in the blank: The process by which bacteria convert nitrogen gas into ammonia is called _______.
nitrogen fixation
What is the significance of the Gram stain in microbiology?
The Gram stain helps classify bacteria into Gram-positive and Gram-negative based on their cell wall structure.
Multiple Choice: Which of the following bacteria are known to be beneficial for human health? A) E. coli B) Salmonella C) Streptococcus D) None of the above
A) E. coli
What is the function of a bacterial capsule?
The capsule helps protect bacteria from the immune system and aids in adherence to surfaces.
True or False: Bacteria can only live in extreme environments.
False
What is the term for bacteria that thrive in high temperatures?
Thermophiles
Fill in the blank: The study of bacteria is known as _______.
bacteriology
What are endospores?
Endospores are dormant, tough structures formed by some bacteria to survive extreme conditions.
Multiple Choice: Which of the following diseases is caused by bacteria? A) Influenza B) Tuberculosis C) HIV D) Malaria
B) Tuberculosis
What is the role of antibiotics?
Antibiotics are substances that kill or inhibit the growth of bacteria.
True or False: Bacteria can exchange genetic material through a process called conjugation.
True
What is a biofilm?
A biofilm is a community of bacteria that adhere to surfaces and are encased in a protective matrix.
