An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. This atom has ________ protons, ________ neutrons, and ________ electrons
A) 79... 118... 79
B) 118... 79... 118
C) 118... 276... 118
D) 79... 34... 79
A
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Could any of the dinosaurs have been omnivores, i.e. eating both plants and animals? Which results support this conclusion?
a. species 2 because of the lack of a definitive amount of any of the chemicals b. species 4 because the chemical amounts appear to be intermediate betweenthose typical for carnivores and herbivores c. species 1 because of the equal amounts of starch and proteins d. species 3 because of predominance of sugar, which is found in omnivores
In general, communities that characterize a biome are
arrays of species that are adapted to a. specific temperatures. b. patterns of rainfall. c. soil type. d. each other. e. all of these.
Exocrine glands have no ducts and secrete their hormones into the surrounding interstial fluid or
blood. ____________________ Indicate whether the statement is true or false.
A team of researchers is studying the external structures on the dorsal (back) surface of a spider mite. The spider mite seems to be the habitat of an even smaller mite, which is approximately 0.05 mm. While they can see the dorsal surface of the spider mite with their naked eye, they cannot see the mite clearly. The researchers are writing a grant to provide support for a microscope to use to study these new mites. They need to purchase a microscope with a high magnification to observe the new mites on their habitat. It is not necessary for them to observe living mites. Based on the information given, what type of microscope would you suggest?
A. dissecting microscope B. scanning electron microscope C. binocular compound light microscope D. transmission electron microscope