Opportunistic fungi
A) always have two physiological and structural forms.
B) are normal microbiota for many individuals.
C) have special proteins for colonizing the body.
D) are tracked by epidemiologists.
E) have the same geographical distribution as pathogenic fungi.
B
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Figure 2 depicts the region of cells (shaded gray) in which the even-skipped protein is present in a developing Drosophila embryo. Which of the following statements about the control of the eve gene is likely true based on Figure 2?
A. The Hunchback protein is an eve repressor. B. The bicoid gene is an insulator for eve gene expression. C. The Krüppel protein is an eve repressor. D. The Giant protein is an eve activator.
Which of the following are environmental factors that determine where an organism can live? (Check all that apply.)
_____ intraspecific competition _____ predation _____ prey availability _____ soil type _____ sunlight _____ temperature _____ water
Genetic screening can be used to identify:a
only diseases caused by more than one gene. b. diseases caused by single gene mutations. c. non-genetic conditions.. d. chromosomal abnormalities. e. predicted date of birth.
Salvarsan was
A. used to treat syphilis. B. discovered in the mid 1900s. C. first discovered as a product of Penicillium notatum. D. discovered by Robert Koch. E. formulated from the red dye prontosil.