________ consume organic molecules to live.
A. Photoautotrophs
B. Autotrophs
C. Hemitrophs
D. Heterotrophs
E. Plants
D. Heterotrophs
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When the SRY gene of the Y chromosome becomes active (around 7 weeks),
a. the Müllerian and Wolffian ducts both develop into male reproductive structures. b. the Müllerian ducts develop into male reproductive structures and the Wolffian ducts disappear. c. the Müllerian ducts disappear and the Wolffian ducts develop into male reproductive structures. d. the Müllerian and Wolffian ducts both disappear. e. the Müllerian and Wolffian ducts both develop into female reproductive structures.
Edema is a result of increased interstitial fluid in various tissues of the body. All of the following are causes of edema EXCEPT
A. injury to a limb. B. liver disease. C. abnormally low blood pressure. D. pregnancy. E. protein malnutrition.
An individual's ____ determines its observable ____
a. phenotype; genotype b. genotype; phenotype c. gene location; allele d. heterozygote; homozygote e. homozygote; heterozygote
Many animal rights activists and "Hunger Watch" groups have claimed that if beef cattle and other sources of meat were eliminated, more people could be fed. What is the ecological theory behind the argument that humans should eat a greater proportion of
their food "lower in the food chain"? Also speculate about a situation in which this principle may be less applicable. What will be an ideal response?