The ________ is formed from two bones that are fused at the midline, forming the upper jaw
Fill in the blank(s) with correct word
maxilla
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The process by which a sperm and an egg are united is called _____________
Fill in the blank(s) with the appropriate word(s)
Monosaccharides can be classified according to the spatial arrangement of their atoms.
a. true b. false
Weight gain and obesity may be partly caused by certain gut microbial communities that
A) absorb more vitamins and essential amino acids. B) produce more volatile fatty acids by fermentation. C) stimulate the gut endothelium to absorb more sugars. D) produce more hydrogen gas by fermentation.
Which of the following is a disadvantage of using Bt to control insects?
A. Bt does not accumulate in the soil or in nontarget animals. B. Though not well documented it is possible for horizontal gene flow to introduce Bt genes into other plants. C. The toxin can only be activated in target insects so it is nontoxic to mammals. D. Bt is easily degraded in the natural environment.