Kingdom Bacteria

What do you call the type of cocci that occurs in pairs?

• Diplococcus

• Streptococcus

• Staphyloccocus

• Tetracoccus

Which among the following phylum of bacteria plays an important role in the Nitrogen cycle?

• Chlamydiae

• Chlorobi

• Fusobacteria

• Nitrospira

Which of the following BEST describes Cyanobacteria?

• Cyanobacteria are often called "blue-green algae"

• Cyanobacteria are quite small and usually unicellular

• They are round in shapes, and often grow in colonies large enough to see

• Cyanobacteria are prokaryotic oxygenic phototrophs that contain blue and green pigments

Why are bacteria important to life on Earth?

• They help in digestion, nitrogen cycle, and decomposition

• They cause diseases in humans, and animals

• They serve important roles in the food chain only

• They are not used in biotechnology applications due to their small size

What bacteria is surrounded by an outer sheath-like envelope referred to as "toga"?

• Caldiserica

• Firmicutes

• Proteobacteria

• Thermotogae

What makes up a bacterial cell wall?

• Cellulose

• Chitin

• Peptidoglycan

• All of the above

Which of the following phyla below share characteristics of both bacteria and fungi?

• Actinobacteria

• Bacteroidetes

• Fibrobacteres

• Fusobacteria

Which of the following BEST describes the importance of gram staining?

• Identify the presence of bacteria

• To identify the thickness of the cell walls of the bacteria

• Determine the cell morphology, arrangement and grouping of bacterial cells

• Determine the difference between a gram positive bacteria and a gram negative bacteria

Identify which of the following statements is INCORRECT.

• Chlamydiae are nonmotile coccoid bacteria

• Chlamydiae cannot be propagated in a bacterial culture media

• Chlamydiae are gram-positive intracellular bacteria

• Chlamydiae are most successfully isolated while still inside the host cell

Answer explanation

they are gram-negative

According to the Catalogue of Life (COL), how many phyla does kingdom bacteria have?

• 19

• 29

• 39

• 49