Carbon dioxide is an element
Indicate whether the statement is true or false.
ANS: F, a compound
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Which best describes a catabolic reaction?
a. It involves the expenditure of energy. b. It involves the anabolic production of complex molecules. c. It involves the breakdown of life sustaining processes within cells. d. It involves the breakdown of large organic molecules to simple building blocks. e. It involves the building up of complex organic molecules from simple building blocks.
While walking along a streambed, you encounter a reedy seedless plant. Upon closer inspection, you determine that the stems contain large amounts of silica and have tiny scale-like leaves. This plant is most likely a
A) moss. B) fern. C) cycad. D) horsetail. E) liverwort.
Wood frogs freeze solid during the winter and then thaw in the spring. As the freezing progresses, blood circulation stops. How would you expect cells not being served by the circulatory system to produce ATP during this time, and what by-product would
you expect to build up in the cells? A) aerobic respiration and CO2 B) fermentation and lactate C) fermentation and alcohol D) photosynthesis and O2
Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old. These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity. What domain do these prokaryotes belong to?
A. Protists B. Eukarya C. Protoctista D. Archaea E. Archetista