The imaging technique that identifies differences in blood flow to particular regions through detection of differences in the relative proportions of oxygenated and deoxygenated hemoglobin is the
A. MRI scan.
B. X-ray.
C. CT scan.
D. fMRI scan.
E. sonogram.
D. fMRI scan.
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Which of the following is true for all exergonic reactions?
A) The products have more total energy than the reactants. B) The reaction proceeds with a net release of free energy. C) The reaction goes only in a forward direction: all reactants will be converted to products, but no products will be converted to reactants. D) A net input of energy from the surroundings is required for the reactions to proceed. E) The reactions are rapid.
Which of the following statements describes the function of a chloroplast?
a. It stores water. b. It aids in intracellular digestion. c. It converts light energy into chemical energy. d. It manufactures proteins. e. It converts chemical energy into heat energy.
Where does the kangaroo rat get the bulk of its water from?
a. from re-uptake of water from urine b. from oxidative reactions in its cells c. from absorption through its skin d. from ingestion of food
nonpolar covalent bond
What will be an ideal response?