Ancestors of __________ may have possessed mitochondria which were lost or reduced during
evolutionay history.
a. Laminaria
b. Amoeba
c. Euglena
d. Giardia
e. Paramecium
D
You might also like to view...
AMP-activated protein kinase (AMPK) is an enzyme that is activated by high levels of AMP in cells. If levels of AMP are high in cells, that means that levels of ATP are low. Once active, AMPK activates catabolic pathways and inhibits anabolic pathways in the cell. Why do you think that is the case? Choose the answer that best explains the role of AMPK.
A. High levels of AMP indicate that there is a high amount of energy stored in the cell, thus activating catabolic pathways and inhibiting anabolic pathways are mechanisms to use stored energy. B. By inhibiting anabolic pathways, AMPK provides a mechanism to generate heat for the cell, which is important if AMP levels are high in the cell. C. By activating catabolic pathways, AMPK provides a mechanism to activate exergonic pathways, which is important if AMP levels are high in the cell. D. Activating catabolic pathways and inhibiting anabolic pathways will ultimately lead to higher consumption of ATP, which is important if AMP levels are high in the cell. 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 AMP, ADP, and ATP in cells? What other information is related to the question? Choose Answer Do you have all the information needed to make a determination about the change in free energy? 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?
Bananas are picked green, shipped to their destination, and then sprayed with an artificial plant hormone. Which plant
hormone would be used for this purpose?
a. auxin b. gibberellin c. ethylene d. cytokinin e. abscisic acid
When ocean levels dropped about 70 million years ago, marsupial mammals moved into North America and displaced many of the placental mammal species
a. true b. false
Which is NOT an example of an alien or exotic species?
a) introduction of Nile perch into Lake Victoria b) bison in the United States c) the mongoose brought to Hawaii to control rats d) zebra mussels introduced into the Great Lakes e) the brown tree snake in Guam