Which of the following statements accurately describes a role of prokaryotes in chemical recycling?
a. Photoheterotrophs convert atmospheric CO2 into organic compounds.
b. Chemoautotrophs such as the soil bacterium Burkholderia glathei increase the availability of nitrogen for growing seedlings.
c. Chemoheterotrophic prokaryotes may function as decomposers to return chemical elements to an ecosystem.
d. Photoautotrophic bacteria living on hydrothermal vents support communities of eukaryotic species.
e. All of the listed responses are correct.
Answer: c. Chemoheterotrophic prokaryotes may function as decomposers to return chemical elements to an ecosystem.
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Many metabolic pathways are ultimately concerned with ATP; either with the generation of ATP, or with the requirement of ATP for that pathway to function. Why is ATP so important to metabolism?
A. Hydrolysis of ATP is used to drive exergonic reactions B. Hydrolysis of the bond between adenine and ribose in ATP is commonly used to release energy that can be used to drive other cellular reactions C. The phosphate groups of ATP are held together by unstable bonds that can be broken to release energy D. ATP is a protein that serves as the energy currency of cells
For many species, there are often regional differences in their
a. common names b. scientific names c. taxa. d. binomial nomenclature
Which of the following reproduce by parthenogenesis?
A. bees B. some lizards C. some fish D. some frogs E. All of the choices are correct.
Chronic use of nonsteroidal anti-inflammatory drugs would MOST likely result in:
A) diverticulitis. B) esophageal varices. C) acute gastroenteritis. D) peptic ulcer disease.