Ecology and environmentalism are the same scientific discipline
Indicate whether the statement is true or false
FALSE
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How have classification systems for living things changed over the years?
A) Scientists have always recognized five kingdoms of living things, but the placement of species within those kingdoms has changed. B) Until the last 20 years, organisms had been classified first as animal or plant. Recently, a five-kingdom system became the preferred classification system. C) The three-domain system has been introduced within the last 30 years, to supplement the five-kingdom system. D) The exact organization proposed in the eighteenth century by Carl Linnaeus has recently been reinstituted by scientists.
The breakdown of which of the following leads to the self-destruction of the cell?
A. polysome B. lysosome C. microsome D. centrosome
Experiments with genetically altered mice showed that the mice would consume abnormally high amounts of bitter-tasting compounds in water after their _____
A) hormone receptors for digestive hormones were reduced or eliminated, showing that bitter tastes are reinforced by digestive responses B) salt-taste cells were altered to express receptors for bitter tastants, suggesting that animals have unregulated salt appetites C) visual sense was reduced or eliminated, suggesting that mice learn visual cues about bitter tastes D) sweet-taste cells were altered to express receptors for bitter tastants, suggesting that the sensation of taste depends only on which taste cell is stimulated
Which of the following is an accurate description of ATP?
A) ATP is a form of long term energy storage. B) ATP is a compound formed of ionic bonds. C) ATP does not readily react with other cellular macromolecules. D) ATP serves as a recyclable energy for cells. E) ATP is a structural component of DNA.