Among protists, only the ciliates have a micronucleus and macronucleus where genes are located in two discrete areas within each cell for redundancy
Indicate whether the statement is true or false.
Answer: FALSE
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Which of the following is NOT involved in altering the resistance of the airway to air movement?
A) secretion of mucus into the airway B) transpulmonary pressure C) contractile activity of bronchiolar smooth muscle cells D) tractive forces exerted on the airway by surrounding tissue E) pulmonary surfactant concentration
When sampling a species that has clumped distributions, which approach listed below is best?
A) sampling at random locations B) counting every individual C) calculating an ecological density D) assuming a uniform distribution
An individual whose resident normal microbiota overgrows the other indigenous organisms resulting in disease may be a result of:
a. the patient has received antibiotic treat-ment killing off some of the protective resident microbiota. b. become immunocompromised or unable to fight off infection in normal conditions. c. maybe suffering from a debilitating dis-ease resulting in a decreased balance be-tween normal microbiota and pathogenic organisms. d. all of the scenarios are potentially asso-ciated with the development of disease.
If a cofactor is not protein but another kind of organic molecule it is called a(n)
A. regulator lipid. B. coenzyme. C. substrate. D. catalyst.