Which of the neuroimaging techniques requires a small amount of radioactivity to be injected into the bloodstream?
a) PET
b) fMRI
c) MRI
d) EEG
Ans: a) PET
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Consider the Calvin-Benson cycle and the noncyclic photosynthetic pathway. Why is the cyclic
pathway so important? What will be an ideal response?
The formation of the ozone shield during the Precambrian era helped to create favorable conditions for the evolution of terrestrial life forms.
Answer the following statement true (T) or false (F)
A chemical imbalance in the blood can cause the heart to stop pumping blood, which will have a detrimental effect on other organs. This observation can be attributed to:
A. emergent properties B. reductionism C. equilibrium state D. evolutionary conservation
Electrolytes are critical for life for all of the following reasons EXCEPT which one?
a. They stabilize a variety of compounds. b. They act as electron carriers. c. They allow electrical gradients to exist within cells. d. All of the above are reasons why electrolytes are critical for life.