Hypotheses that are confirmed through repeated testing can lead to the development of a theory, such as the cell theory. What do all scientific theories attempt to do?
A) explain the natural world
B) classify the natural world
C) predict events in the natural world
D) describe the natural world
Ans: A) explain the natural world
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Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
A) The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, i, and NADP+ to the light reactions. B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. C) The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. E) There is no relationship between the light reactions and the Calvin cycle.
Ascites is defined as:
A) an abnormal accumulation of fluid in the peritoneal cavity. B) lower extremity edema caused by lymphatic obstruction. C) fluid buildup in the lungs due to decreased cardiac function. D) fluid backup in the periphery due to right atrial dysfunction.
Neurotransmitters:
a. are expelled from the presynaptic cells b. tend to destroy acetylcholine. c. enter the presynaptic cell to continue the passage of impulse d. interact with membrane receptors of the postsynapctic cells e. are expelled from the presynaptic cells and interact with membrane receptors of the postsynaptic cell.
A corridor wide enough to contain interior habitat is called
A) functional connectivity. B) a patch. C) a strip corridor. D) a filter effect.