During which stages of cellular respiration is CO2 released?
a. glycolysis
b. pyruvate oxidation
c. citric acid cycle
d. electron transport system
e. both pyruvate oxidation and citric acid cycle
E
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Considering the global carbon cycle, where are humans having a great impact?
I) terrestrial ecosystems II) oceans III) atmosphere A) only I B) only II C) only III D) only I and III E) I, II, and III
Which of these organisms is NOT included in the Eukarya?
a. heterotrophic bacteria b. heterotrophic protists c. fungi d. animals e. plants
The principal purpose of Arcata, California's, marsh and wildlife sanctuary is to
A. re-establish populations of rare cranes. B. provide an educational resource for school students. C. filter the city's sewage. D. store drinking water for urban use. E. provide open park space for the city's community.
Bone-forming cells are called _____, while cells that dissolve bone, releasing calcium and phosphorus, are _____
osteoclasts; osteoblasts osteocytes; osteoclasts osteoblasts; osteoclasts osteoclasts; osteocytes