Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
A) CO2
B) an amino acid
C) glucose
D) K+
A
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The earliest signs of life appeared on Earth during the ____ era
a. Archean b. Paleozoic c. Mesozoic d. Cambrian e. Cenozoic
Which structures would you find in a sac fungus?
a. ascogonium, antheridium, zygospores. b. ascospores, oogonia, asci, ascocarps. c. basidia, basidiospores, basidiocarps. d. ascogonia, asci, ascocarps, ascospores.
The newest issue of your favorite science magazine has an article about several recently discovered archaeans. These organisms were found living in swamp mud. Based on this information, these archaeans are probably halophiles.
Answer the following statement true (T) or false (F)
The Antarctic icefishes are the only known vertebrates to lack hemoglobin. Which of the following would be LEAST likely to alter gas transport from the environment to an icefish's cells?
A) higher oceanic temperatures from global warming B) higher concentrations of carbon monoxide in the water from pollution C) higher concentrations of carbon dioxide in the water from pollution D) an injury that reduces the surface area of gills