In the name Staphylococcus aureus, Staphylococcus is the
species
domain name.
OC. Genus
kingdom.
The Correct Answer is C
A. species: In the binomial name Staphylococcus aureus, the species epithet is aureus, not Staphylococcus.
B. domain name.: Domain (e.g., Bacteria, Archaea, Eukarya) is a much higher taxonomic rank and is not represented by Staphylococcus.
C. Genus: Staphylococcus is the genus name that groups closely related species.
D. kingdom.: Kingdom is a higher taxonomic category (e.g., Animalia, Plantae, Fungi), not the genus label.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. purple: Crystal violet is the primary dye; gram-positive cells retain it and appear purple after the first dye.
B. red: Red (safranin) is the counterstain applied later and is not the appearance after the first dye.
C. colorless: Cells become colorless only after decolorization if they do not retain the primary dye (typical of gram-negative), not after the first dye in gram-positive.
D. brown: Brown is not a standard color outcome in the Gram staining sequence.
Correct Answer is A
Explanation
A. Polysaccharides: Agar is a complex polysaccharide (derived from red algae) used as a solidifying agent in microbiological media.
B. Amino acids: Amino acids are building blocks of proteins and may be components of media but are not the main constituent of agar itself.
C. phospholipids: Phospholipids form biological membranes and are not the structural component of agar.
D. sterols: Sterols (e.g., cholesterol) are membrane components in eukaryotes and are not what agar is made of.
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