Which is incorrect about tinea versicolor?
A. It is a superficial mycosis.
B. It causes disruption of skin pigmentation resulting in a mottled appearance.
C. It is caused by the yeast Malassezia furfur.
D. It is often transmitted by fomites.
E. It occasionally causes systemic infections in compromised patients.
Answer: D
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A scientist is analyzing air bubbles trapped in ancient rocks that can be used to understand the ancient atmosphere. What do you expect the scientist will observe when comparing rocks younger than 3.8 billion years old to rocks older than 3.8 billion years?
A. The ratio of the carbon-12 isotope will be lower in the younger rocks, because living organisms preferentially use carbon-12 over other isotopes. B. The younger rocks will have higher levels of carbon dioxide, because there was no carbon dioxide in the atmosphere before animals evolved and expelled it as waste. C. The ratio of carbon-12 will be lower in the older rocks, because carbon-12 had to build up on earth before life could evolve. D. The amount of carbon will vary unpredictably in the younger rocks, because rock weathering added carbon dioxide to the atmosphere, and volcanic activity sequestered it.
Which process is NOT associated with structures that are formed from the extensive infolding of eukaryotic
membranes? a. concentration of nutrients b. cell division c. transport of proteins d. protection of metabolic machinery e. greater surface area for metabolism
The outputs of Krebs cycle which transfer energy to the electron transport system are:
a. ATP and GTP b. CO2 and GTP c. FADH2 and NADH d. NADH and ATP e. FADH2 and ATP
Which of the following is NOT a predisposing factor affecting the occurrence of disease?
A) climate B) nationality C) nutrition D) preexisting illness