The by-product of the metabolism of
cyanobacteria that had the most effect on the
further evolution of life is
a. oxygen gas.
b. carbon dioxide.
c. water.
d. nitrogen gas.
e. hydrogen gas.
A
You might also like to view...
What best explains the occurrence of identical plant fossils in South Africa, Antarctica, and South America? a. Severe storms spread seeds from one continent to the other two
b. All three land masses were at one time connected, but have since drifted apart. c. Migrating birds carried the seeds from one location to another, establishing new populations. d. All three continents experienced identical climates.
Osmosis involves
a. the movement of a solvent, like water. b. differences in solute concentrations. c. movement from hypotonic to hypertonic solutions. d. all of these except e. e. all of these except c and d.
During contraction,
a. cross-bridges of muscle filaments are broken and reformed. b. ATP is used to break cross-bridges. c. muscle cells use glucose derived from glycogen as an energy source. d. glycogen depletion may lead to muscle fatigue. e. all of these occur.
The mitotic cell cycle results in the production of ________
A) four cells, each with the same amount of genetic material and the same genetic information B) two cells, each with the same amount of genetic material but with different genetic information C) two cells, each with the same amount of genetic material and the same genetic information D) four cells, each with the same amount of genetic material but with different genetic information