Some species of insects are able to walk across liquid water because of the:
A. high specific heat of water
B. low gravitational effect of their body weight relative to the amount of water
C. higher density of liquid water compared to solid water
D. capacity of water to function as a solvent
E. high surface tension of water due to its cohesion
Answer: E
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What step should occur after numerous observations are used to form a sensible, inductively reasoned hypothesis?
A) The hypothesis is recognized as proven. B) The hypothesis is discarded as incorrect. C) The hypothesis must be tested. D) The hypothesis becomes a scientific law.
Describe the structure and organization of the rDNA repeat unit in eukaryotes
What will be an ideal response?
Use the table to answer the corresponding question(s)
Species Pairs Percent Divergence in a Selected DNA Sequence Human?chimpanzee 1.7 Human?gorilla 1.8 Human?orangutan 3.3 Human?gibbon 4.3 Human?rhesus monkey (Old World monkey) 7.0 Human?spider monkey (New World monkey) 10.8 Human?tarsier 24.6Based on the data in Table 18-1, which of the following primates is the most distantly related to humans? a. chimpanzee b. gorilla c. rhesus monkey d. gibbon e. orangutan
Unlike sweet, salty, sour, or umami, the "bitter" category of tastants includes wide structural variety of detected molecules. Multiple receptors are required to sense the different bitter tastants. What do they have in common? Bitter taste is thought to have evolved as a warning system for toxic compounds.The bitter receptor hTAS2R38 is activated by glucosinolates found in plants such as turnips and broccoli. The gene variant a person has determines how sensitive their neurons are to these compounds. What would you predict for people who have the high-sensitivity variant of hTAS2R38?
A. They will dislike turnips and broccoli. B. They will have to eat more turnips and broccoli to get the same flavor. C. They will become allergic to turnips and broccoli. D. They will not easily digest turnips and broccoli.