This pigment is responsible for the red-yellow coloration seen in leaves during the color change in autumn.
A. chlorophyll a
B. chlorophyll b
C. carotenoids
D. porphyrin
E. phytol
C. carotenoids
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Glycolysis is a metabolic process that is done by all cells. However, not all cells make use of another metabolic process called the Krebs cycle. What does this tell you about the evolution of these processes?
A. As a metabolic process, glycolysis likely evolved prior to the Krebs cycle B. As a metabolic process, the Krebs cycle likely evolved prior to glycolysis C. Both the Krebs cycle and glycolysis likely evolved at the same time Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about evolution and time? What other information is related to the question? Choose Answer Do you have all necessary information to determine the relative importance of glycolysis and the Kreb’s cycle? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
To some extent, Earth's surface reflects solar radiation (in the form of heat), which is subsequently absorbed by certain ____ gases in the atmosphere, such as methane and CO2
Fill in the blank with the appropriate word.
The pyrimidine bases are _______
A. cytosine, thymine, and uracil B. adenine and guanine C. adenine and thymine D. cytosine and guanine
Why was it important that Darwin visited islands, and then compared island species with continental species?
A. Because Darwin found unique species on the islands. These island species did not have any of the characteristics of their ancestral continental species. B. Because Darwin's attention was drawn to the uniqueness of the island species, even though they retained some resemblance to continental species. C. Because Darwin's attention was drawn to the uniqueness and variety of finches on the islands, determining that their adaptations came from eating different food than continental species. D. Because Darwin saw very low reproductive survival rates on the island as compared to the mainland. E. Because Darwin observed continental species of finch flying to the islands.