Central coordination of vertebrate biological rhythms in physiology and behavior reside in the _____
A) pituitary gland
B) hypothalamus
C) cerebrum
D) thalamus
B
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Fever, weight loss, internal bleeding are possible signs of ____
a. malaria b. leukemia c. infectious mononucleosis d. anemia e. toxemia
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. X-ray. B. MRI scan. C. sonogram. D. fMRI scan. E. CT scan.
Match the term on the left with its definition or description on the right.
A) energy from carbon, carbon from sunlight B) electron donor is water C) energy from sunlight, carbon from organic sources D) electron donor is carbon dioxide E) energy from sunlight, carbon from CO2 F) light-dependent generation of NADPH G) use electron donors such as sulfide and thiosulfate 1) photoreduction 2) photoheterotrophs 3) photoautotrophs 4) oxygenic phototrophs 5) anoxygenic phototrophs
Most soil water moves from epidermis to vascular cylinder by:
a. diffusing through root cell walls and then actively transported through cortex cells b. enter a cell wall's cytoplasm only through transport proteins in its plasma membrane c. diffusing through root cell walls d. diffusing through root cell walls and then move through plasmodesmata e. actively transported into root cells and then move through plasmodesmata