Exploring Microbes and Algae

Which of the following is NOT a method used to detect the presence of microbes?

• Using a microscope

• Smelling the sample

• Growing cultures on agar plates

• Staining techniques

Which of the following is a characteristic of viruses?

• They can reproduce on their own

• They are made up of only proteins

• They require a host cell to reproduce

• They have a cell wall

Which type of microorganism is known for performing photosynthesis and living in aquatic environments?

• Bacteria

• Fungi

• Algae

• Viruses

What is the main difference between bacteria and viruses?

• Bacteria are smaller than viruses

• Viruses can reproduce on their own

• Bacteria are living cells, viruses are not

• Bacteria do not cause diseases

Which of the following statements about algae is TRUE?

• Algae are always multicellular

• Algae can be found in both freshwater and marine environments

• Algae are a type of virus

• Algae cannot perform photosynthesis

Which tool is most commonly used to observe microorganisms?

• Telescope

• Microscope

• Magnifying glass

• Binoculars

Which of the following is NOT a type of microorganism?

• Bacteria

• Algae

• Virus

• Insect

What is a common characteristic of all viruses?

• They have a nucleus

• They are made of cells

• They contain genetic material (DNA or RNA)

• They can move on their own

Which of the following is a way to classify algae?

• By their color pigments

• By their ability to infect humans

• By their movement

• By their size only

Which of the following statements about microorganisms is FALSE?

• Some microorganisms are helpful to humans

• All microorganisms cause diseases

• Microorganisms can be found in soil, water, and air

• Microorganisms include bacteria, viruses, and algae