Of the following, which is the best description of the mutual benefit to both species found in a lichen?
A. The autotroph produces antibiotics to ward off infection by bacteria.
B. The autotroph prevents dehydration and the heterotroph provides a carbon source.
C. The autotroph provides a carbon source and the heterotroph absorbs moisture and minerals.
D. The autotroph produces oxygen and the heterotroph consumes oxygen.
E. The heterotroph protects the autotroph from predation.
C. The autotroph provides a carbon source and the heterotroph absorbs moisture and minerals.
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Plaque is _____ caused by _____
a. an infectious disease; bacterial biofilms b. a non-infectious disease; inflammation of the gums c. an infectious disease; non-pathogenic bacteria d. a non-infectious disease; E. coli e. an infectious disease; E. coli
Fertilization in mammals normally occurs in the
a. ovary. b. uterus. c. vagina. d. oviduct. e. follicle.
"Artery" and "vein" are defined by whether they leave or enter the heart. If they were defined by whether they carried oxygenated or deoxygenated blood, we would have to change the name(s) of
Select one: a. the hepatic portal vein to a hepatic portal artery. b. the hepatic and renal systems (they would have to be switched). c. the pulmonary artery and vein (they would have to be switched). d. the coronary artery and vein (they would have to be switched). e. the aorta and vena cava.
If the regression results for a linear probability model of mortgage application are given by: Approvedi = 0.6(0.12) + -0.05(0.001)Debt2IncomeRatioi, with standard errors reported in parenthesis. How should we interpret the coefficient on the debt-to-income ratio variable?
A. Increasing your debt to income ratio by 1 decreases your probability of being approved by 0.55. B. Increasing your debt to income ratio by 1 decreases your probability of being approved by 0.05. C. The probability of being approved for a mortgage is 0.6. D. The probability of being approved for a mortgage is 0.05.