The human microbiome consists of:
Only eukaryotes
Only prokaryotes
Bacteria, archaea, viruses, and fungi
Only bacteria
The Correct Answer is C
A. Only eukaryotes: The microbiome includes many prokaryotes and viruses as well as eukaryotic microbes, so it is not limited to eukaryotes.
B. Only prokaryotes: Prokaryotes (bacteria, archaea) are major components, but the microbiome also contains viruses and fungi.
C. Bacteria, archaea, viruses, and fungi: The human microbiome is composed of diverse microorganisms including bacteria, archaea, viruses, and fungal species.
D. Only bacteria: Bacteria are abundant, but this option omits other microbial groups present in the microbiome.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. During adolescence: Microbial communities continue to change during adolescence, but initial colonization occurs much earlier.
B. Through diet only: Diet is a major route of microbial exposure, but initial colonization also occurs via maternal transfer and the birth process.
C. After age 5: By age 5 the microbiome has already been established and is undergoing maturation, not initial colonization.
D. At birth: Humans acquire their first major microbial colonization at birth (exposure to maternal microbiota during delivery and shortly after).
Correct Answer is D
Explanation
A. Pathology: Pathology studies disease processes and their effects on tissues and organs, not normal function.
B. Anatomy: Anatomy is the study of body structure (form and relationships), not function.
C. Cytology: Cytology is the study of cells (their structure, function and chemistry) but not the broad study of body function.
D. Physiology: Physiology is the study of body function—how organs and systems work.
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