Understanding Bacteria

What is the singular form of bacteria?

• bacteriumus

• bacterias

• bacterium

• bactera

What type of microorganisms do bacteria belong to?

• Fungi

• Eukaryotes

• Prokaryotes

• Viruses

How long are bacteria typically?

• 20 to 30 micrometers

• 50 to 100 nanometers

• 0.2 to 10 micrometers

• 1 to 5 millimeters

Which of the following is NOT a shape of bacteria?

• Cube

• Spiral

• Rod

• Sphere

Where were bacteria among the first life-forms to appear?

• Venus

• Earth's surface

• Mars

• Earth's oceans

In which environments can bacteria be found?

• Bacteria can be found in soil, water, air, living organisms, and extreme environments.

• Bacteria are only found in the human body.

• Bacteria can only survive in frozen environments.

• Bacteria are exclusively found in deserts.

What is the study of bacteria called?

• Microbiology

• Virology

• Pathology

• Bacteriology

What percentage of bacterial phyla have species that can be grown in the laboratory?

• 1%

• 25%

• 10%

• 5%

Which organisms depend on bacteria for survival?

• Aquatic mammals like dolphins

• Ruminants and certain insects depend on bacteria for survival.

• Carnivores that eat plants

• Predatory birds that hunt insects

What do bacteria and some archaea synthesize that is essential for life?

• Water, salts, and gases

• Enzymes, hormones, and sugars

• Proteins, nucleic acids, and lipids

• Carbohydrates, vitamins, and minerals