The general name for an enzyme that dephosphorylates proteins is:
A. kinase.
B. phosphorylase.
C. phosphatase.
D. dehydrogenase.
C
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The graph below can be used to understand the forces underlying the movement of fluid between the blood and the interstitial fluid. What is a true statement concerning these processes?
A. Normally, the net amount of fluid flow in region A is less than the net amount of fluid flow in region B.
B. Sodium ions contribute significantly to the movement of fluid in region B.
C. Fluid leaves the blood in region A and returns to the blood in region B.
D. In people suffering from severe liver disease or protein starvation, the fluid flow in region B is increased.
E. Edema results from reduction of fluid flow in region A.
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 the movement of materials in and out of the circulatory system? What other information is related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
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?
A friend of yours is wondering about the differences between the words orientation and navigation when these two terms are used in descriptions of bird migrations. Since you have studied and know something about animal behavior, what do you tell your friend?
A. Orientation is adjusting a bearing, while navigation is actually following a bearing. B. Orientation and navigation are used interchangeably when referring to avian migrations. C. Orientation is following a bearing, while navigation is setting or adjusting a bearing. D. Orientation is following the sun in the day as starling do, while navigation is following a bearing with a small amount of magnetite, which is found in the heads of some migratory birds. E. Orientation is the ability to find true east, navigation is the ability to find a bearing while crossing water.
Which of the following genes would most likely play a role in promoting kin selection?
A. the genes important for the development of large antlers in the caribou B. Major Histocompatibility Complex (MHC) genes -- allow mammals to recognize related individuals C. SRY -- the gene that initiates male sex determination D. wingless -- critical for the formation of wings in fruit flies
Darwin drew on the work of Thomas Malthus, a political economist, to convince his readers that:
a. there is a competition for limited resources in nature. b. many individuals in a population do not survive to the age of reproduction. c. only a fraction of individuals in a population reproduce. d. None of the above.