T cells are produced in the bone marrow but mature in the thyroid
Indicate whether the statement is true or false.
ANS: F, thymus
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Abiotic oxidation of Fe2+ requires oxygen; no other chemicals can directly oxidize Fe2+
Indicate whether the statement is true or false.
The challenges in movement experienced by people with Parkinson disease are due to loss of dopamine-secreting neurons in which of the following areas?
A. medulla oblongata B. cerebellum C. thalamus D. basal nuclei E. somatosensory cortex
Papillary muscles:
A. contract when the ventricles relax B. prevent the valves from closing during ventricular diastole C. are attached to the semi lunar valves via the chordae tendineae D. prevent the backflow of blood into the atria during ventricular systole E. prevent the backflow of blood into the ventricles from the aorta
Homologous chromosomes are identical copies of each other.
Answer the following statement true (T) or false (F)