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WorksheetsMicroorganism
Total questions: 25
Worksheet time: 25mins
Beneficial or Harmful?
bacteria used in cheese and yogurt
beneficial
harmful
Beneficial or Harmful?
yeast used to cause bread to rise
beneficial
harmful
Nitrogen-fixing bacteria are important because...
they are decomposers
they are salt lovers
they provide protection for plants from diseases
they make nitrogen available to plants in form they can use
Bacteria are made up of how many cells?
1
2
3
trillions!
Microorganisms include
bacteria
virus
protozoa
fungi
algae
What is an example of a microorganism?
(a)
What is the most common type of microorganism found on Earth?
Bacteria
Virus
Fungi
Protozoa
which of the following is the tiniest microorganism?
bacteria
virus
fungi
algae
protozoa
What makes up the largest group of microorganisms
Protozoa
Fungi
Bacteria
Algae
_____________ are single-celled spherical, spiral or rod shaped organisms.
Yeast
Algae
Penicillin
Bacteria
4. What is bacteria?
(a)
Which pathogen is the tiniest
viruses
bacteria
parasites
fungi
Mold helps dead things (plants, animals)...
Grow
Decay
Sleep
Reproduce
Bacteria is known as ______________ in an ecosystem when feeding on dead organisms.
decomposers
herbivores
pathogens
infections
What is true about bacteria?
Bacteria use photosynthesis to make their own food
Bacteria can only be found in dirt
Bacteria is always beneficial
Bacteria can be used to make certain foods
Identify a statement that shows how bacteria are NOT helpful to humans.
Bacteria break down dead plants and animals
Bacteria break down water, soil, and air pollution.
Bacteria cause inflammation of tissues and often a fever.
Bacteria break down the milk protein to create cheese.
Beneficial or Harmful?
fungus causes ringworm or athlete's foot on the skin
beneficial
harmful
Beneficial or Harmful?
mold used to create Penicillin (antibiotic)
beneficial
harmful
Fungi is benefical to us because of the following reason:
They are a source of oxygen
They can clean up pollution
They are a source of antibiotics
They help to clean run off from waste
Some bacteria is known as ________________ and cause disease.
pathogens
flagella
influenza
ebola
Which of the following statements are true?
All microorganisms are bad
All microorganisms are good
Some microorganisms are harmful, while some can be helpful
Microorganisms are too small to do anything to anyone
Which of the following microorganisms is used in the production of yogurt?
Bacteria
Virus
Fungi
Protozoa
What role do microorganisms play in the nitrogen cycle?
They decompose organic matter
They fix atmospheric nitrogen into a usable form
They cause diseases in plants
They produce oxygen
Which microorganism is commonly used in the fermentation process to make bread rise?
Yeast
Bacteria
Virus
Algae
How do microorganisms contribute to the carbon cycle?
By photosynthesis
By decomposing dead organisms
By fixing nitrogen
By producing methane
