Presence Flashcards
(16 cards)
What do most microorganisms use to respire?
Oxygen
Most microorganisms require oxygen for respiration.
What temperature range do most warm microorganisms grow in?
29-38°C
Warm temperatures promote the growth of many microorganisms.
In what conditions do microorganisms grow well?
In the presence of moisture
Moisture is crucial for microbial growth.
What do microorganisms require to survive?
Nutrients
Nutrients are essential for the survival of microorganisms.
How do some microorganisms obtain nutrition?
From dead and decaying organisms, as parasites, or by preparing their own food using sunlight
Microorganisms have varied methods of obtaining nutrition.
What is the purpose of the experiment involving a banana and a moist slice of bread?
To observe how they change over the next few days
This experiment demonstrates the growth of microorganisms under favorable conditions.
What are bacteria and archaea classified as?
Simple microorganisms with prokaryotic cells
They lack a nucleus and are unicellular.
What type of cells do protozoa, algae, and fungi have?
Eukaryotic cells
These organisms have a well-defined nucleus and may be multicellular.
Where can bacteria like Lactobacillus be found?
Everywhere: soil, waterbodies, snow, and in/on living organisms
Lactobacillus is a common bacterium found in various environments.
How do protozoa obtain their nutrition?
From other organisms
Protozoa are typically heterotrophic.
What is unique about viruses in relation to living organisms?
They are neither living nor non-living and do not show characteristics of organisms until inside a host
Viruses require a host to replicate and cause diseases.
What is fermentation?
The process carried out by microorganisms to break down sugar to produce acid or alcohol
Fermentation is used in food production.
What products are made using microorganisms in the food and beverage industry?
Curd, cheese, bread, idli, dosa, alcohol, and vinegar
These products utilize fermentation processes.
Where do fungi typically grow?
In dark, moist places
Fungi thrive in environments rich in moisture and organic matter.
What type of nutrition do algae perform?
Photosynthesis
Algae are autotrophic and produce their own food.
Fill in the blank: Microorganisms like _______ are used to make bread.
Yeast
Yeast is a type of fungus essential for bread-making.
