Examining Stained Cells

Staphylococcus aureus

________, a small, purple, cocci- shaped bacterium, and just like Bacillus subtilis, with a gram +ve structure and a cluster arrangement.

Escherichia coli

________ is a small, pink, bacillus- shaped bacterium with a gram- ve structure and.

Saccharomyces cerevisiae

________ has a nucleus present in its cells, which the bacterial cells lack as they are single- celled prokaryotes meaning their genetic information is bound by a nucleus, unlike the yeast cells which are eukaryotes as their genetic information is bound by a nucleus.

microbial flora

The ________ of the oral cavity, pink clustered, cheek cells with a large number of cocci or bacillus shaped bacteria in the cytoplasm.

Basic dye

________ stains microorganisms because the chromophores are positive, giving the material an overall positive charge.

Plaque

________ contains the same bacteria that is present in saliva.

Streptococcus

Bacteria such as ________ sanguinis thrive on plaque, and the bacteria that contribute to plaque production are present in saliva, especially the protein contained in saliva, which creates a dental pellicle.

Bacillus subtilis

________, a small, purple, bacillus- shaped bacterium with a gram +ve structure that arranges in clusters and forms endospores.

Saccharomyces cerevisiae

________ (yeast) is, a large, cocci- shaped cell with a gram +ve structure that is purple in colour.

4×

Low power

40 or 44×

High power

95 or 100×

Oil immersion