Most of the carbon dioxide released by cells is transported in the venous supply in what form?
A) free carbon dioxide gas
B) oxyhemoglobin
C) soluble bicarbonate ion
D) bound to hemoglobin
E) carbon monoxide
C
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In many areas of the world, humans are destroying habitats at an alarming rate. Why is habitat destruction so dangerous?
What will be an ideal response?
Which of the following are consequences of Arctic ice melting due to global warming?
a. arctic animals are losing suitable habitat b. polar bears are in poorer condition and their weight has decreased over the last 30 years c. more solar radiation is being absorbed by the ocean d. the temperature is increasing in the Arctic at an accelerated rate e. all of the above
The characteristic brown, blue-green, pink, or other tints of ascomycetes are due to the color of their
__________. a. mycelia b. hyphae c. conidia d. sporangia e. ascospores
If each number represents a population, this illustration provides an example of:
a. a peripherally isolated species. c. reproductive isolation. b. a hybrid zone. d. a ring species.