Advanced Microbiology Laboratory Techniques Quiz

Macconkey Agar is selective as it contains crystal violet and bile salt to inhibit Gram- organisms, and differential as it contains lactose to detect coliforms based on the fermentation of the sugar. The pink halo surrounding positive organisms indicates acidic conditions due to lactose fermentation.

The purpose of negative stain is to selectively grow and identify specific bacteria, in this case, pathogenic Staphylococcus aureus. The Mannitol Salt Agar provides selective and differential properties that aid in this identification process.

Capsule stain is a special staining technique used to visualize the presence of capsules surrounding bacterial cells. It is not the same as acid-fast stain, gram stain, or endospore stain, which serve different purposes in identifying bacterial characteristics.

Endospore staining is a microbiological technique used to detect the presence of endospores in bacterial cells. Bacillus is a genus of bacteria known to form endospores, making it a common organism used for endospore staining.

A hanging drop is a technique used to observe live microorganisms under a microscope. Anabaena is a genus of cyanobacteria that can often be observed using this method.

Spirogyra is a genus of filamentous green algae belonging to the order Zygnematales. The correct scientific name for spirogyra is Zygnematales, not Piridinium, Chlorophyta, or Euglenophyta.

The correct answer is Saccharomyces cerevisiae, commonly known as baker's yeast. Diatoms, on the other hand, are a type of algae known for their unique cell walls made of silica.

Paramecium is a genus of ciliates. Caudatum is a common species of Paramecium, while the other options are different microorganisms.

Chlamydomonas is a genus of single-celled green algae known for its distinctive two anterior flagella, while Oscillatoria is a genus of filamentous cyanobacteria. Euglena is a genus of single-celled flagellate protists, and Volvox is a genus of colonial green algae.