Ready to explore more? Discover similar flashcard decks in this domain and related topics.
How can microbial growth be estimated?
By determining cell nitrogen, cell dry weight, culture turbidity, and culture oxygen consumption.
What is one method to estimate microbial growth?
Determining cell nitrogen.
What does culture turbidity indicate?
It is one of the methods to estimate microbial growth.
What is the significance of oxygen in obligate aerobes?
They require the presence of O2.
What are obligate anaerobes sensitive to?
They are sensitive to the presence of O2.
What enzymes are important for oxidative phosphorylation?
Catalase, peroxidase, and superoxide dismutase.
What is the catalase test used for?
To differentiate aerobic and anaerobic bacteria.
What happens to bacteria with the catalase enzyme when exposed to hydrogen peroxide?
They are sensitive to hydrogen peroxide.
What do facultative anaerobes require?
They can grow in the presence or absence of O2.
What is the role of catalase in bacteria?
It breaks down hydrogen peroxide.
How do obligate anaerobes react to hydrogen peroxide?
They do not have catalase and are negative to the catalase test.
What is a characteristic of facultative anaerobes?
They are positive for catalase.
What does the presence of catalase indicate?
It indicates the ability to break down hydrogen peroxide.
What type of bacteria does not have catalase?
Obligate anaerobes.
What is the effect of hydrogen peroxide on obligate anaerobes?
They are negatively affected as they lack catalase.
What is a common feature of obligate aerobes?
They require oxygen for growth.
What type of bacteria can grow with or without oxygen?
Facultative anaerobes.
What is the relationship between catalase and hydrogen peroxide?
Catalase breaks down hydrogen peroxide.
What type of bacteria is sensitive to H2O2?
Obligate aerobes.
What does the term 'oxidative phosphorylation' refer to?
A process involving enzymes like catalase.
What is the outcome of the catalase test for aerobic bacteria?
They are positive for catalase.
What do facultative anaerobes produce in the presence of oxygen?
They produce catalase.
What is a negative result in the catalase test indicative of?
It indicates the absence of catalase, typical of obligate anaerobes.
What is the function of superoxide dismutase?
It helps in the detoxification of superoxide radicals.
What type of bacteria are obligate aerobes?
Bacteria that require oxygen.
What do you call bacteria that can survive without oxygen?
Facultative anaerobes.
What is a key characteristic of obligate anaerobes?
They cannot survive in the presence of oxygen.
What does the presence of superoxide dismutase indicate?
It indicates the ability to detoxify superoxide radicals.
What is the role of peroxidase in bacteria?
It helps in breaking down hydrogen peroxide.
What is a defining trait of facultative anaerobes regarding oxygen?
They can grow in both the presence and absence of oxygen.
What is the effect of hydrogen peroxide on facultative anaerobes?
They are generally resistant due to catalase.
What is the significance of the catalase enzyme?
It protects bacteria from oxidative damage.
What type of bacteria is not affected by hydrogen peroxide?
Facultative anaerobes due to their catalase.
What is the outcome of the catalase test for obligate anaerobes?
They are negative for catalase.
What is the relationship between obligate aerobes and oxygen?
They need oxygen to grow.
What does the presence of oxygen indicate for obligate aerobes?
It indicates a suitable environment for growth.
What is the role of oxygen in microbial growth?
It is essential for obligate aerobes.
What is the function of the catalase enzyme in aerobic bacteria?
It breaks down hydrogen peroxide into water and oxygen.
What type of bacteria can tolerate the presence of oxygen?
Facultative anaerobes.
What is a common feature of obligate anaerobes?
They lack the enzymes to break down hydrogen peroxide.
What is the significance of the catalase test in microbiology?
It helps classify bacteria as aerobic or anaerobic.
What is the effect of hydrogen peroxide on aerobic bacteria?
They can break it down due to catalase.
What type of bacteria is catalase positive?
Aerobic bacteria.
What is the relationship between facultative anaerobes and catalase?
They are catalase positive.
What do obligate anaerobes lack?
They lack catalase.
What is the role of enzymes in microbial growth?
They facilitate metabolic processes.
What is a characteristic of facultative anaerobes regarding oxygen?
They can switch between aerobic and anaerobic metabolism.
What is the effect of oxygen on obligate anaerobes?
It is harmful to them.
What is the importance of chemical requirements in microbial growth?
They are essential for metabolic functions.
What do you call bacteria that thrive in the presence of oxygen?
Obligate aerobes.
What is the impact of hydrogen peroxide on facultative anaerobes?
They can detoxify it due to catalase.
What is the outcome for obligate anaerobes in the presence of oxygen?
They cannot survive.
What is the role of oxygen in oxidative phosphorylation?
It acts as the final electron acceptor.
What is the significance of superoxide dismutase in bacteria?
It protects against oxidative stress.
What do you call bacteria that can live without oxygen?
Anaerobes.
What is a defining feature of aerobic bacteria?
They require oxygen for growth.
What is the relationship between catalase and hydrogen peroxide?
Catalase decomposes hydrogen peroxide.
What is a common characteristic of facultative anaerobes?
They can adapt to different oxygen levels.
What is the effect of hydrogen peroxide on aerobic bacteria?
They can break it down safely.
What do obligate anaerobes do in the absence of oxygen?
They thrive and grow.
Something wrong?Tell us
Follow these simple steps to create your personalized flashcards.
Study Online: View and practice your flashcards interactively in our web app. Bookmark the page so you can come back anytime.
Ready to get started? Create your first flashcard deck now!
Watch our tutorial to learn how to use CardSnap effectively
Discover the story behind CardSnap and our mission to make learning accessible.
One day, my daughter asked me to help her study for a science exam. I thought, “Wouldn't it be easier if she had flashcards?”
So I built this tiny tool to convert her notes into printable cards — quickly and simply.
It worked. And now, I'm sharing it in case it helps someone else study better, too.
Join thousands of students and teachers who trust CardSnap for their learning needs
