The large geologic time period that includes eons that predate life on Earth and eons in which the earliest life on Earth began is the
A. Phanerozoic eon.
B. Hadean eon.
C. Archaean eon.
D. Cenozoic era.
E. Precambrian supereon.
E. Precambrian supereon.
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You have been using massive amounts of weed killer and insecticide to kill weeds in your yard, as well as the grubs and aphids that are munching on your roses and your grass. What effect might this have from a microbiological standpoint?
A. Loss of microbial diversity in the soil B. Damage to the mycorrhizae C. Reduction in microbial numbers in the soil D. Damage to the nitrogen fixing bacteria E. All of the above may be effects of this practice.
Match the reactant in glycolysis on the left with the appropriate enzyme on the right.
A) phosphofructokinase B) phosphoglycerokinase C) fructase D) phosphoglyceromutase E) pyruvate kinase F) phosphoglycerase G) glucose kinase H) PEP kinase I) hexokinase J) aldolase K) fructose dehydrogenase 1) glucose 2) fructose-6-phosphate 3) fructose-1,6-bisphosphate 4) phosphoenolpyruvate 5) 1,3-bisphosphoglycerate 6) 3-phosphoglycerate
The ________ law of thermodynamics states that energy can be neither created nor destroyed.
A. fourth B. second C. first D. third
Algae and cyanobacteria are examples of primary producers
____________________ Indicate whether the statement is true or false.