The nucleus houses the cell's genetic material, ribonucleic acid (RNA)
a. True
b. False
Indicate whether the statement is true or false
False
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Agranulocytes lack hemoglobin, whereas granulocytes contain small amounts of globin
Indicate whether the statement is true or false
The term central nervous system refers to the ________
A) brain, spinal cord, and peripheral nerves B) autonomic nervous system C) brain and spinal cord D) spinal cord and spinal nerves
What is the molecule that is found only in muscle tissue and provides a rapid source of high-energy ATP for muscle contraction?
a. lactic acid b. creatine c. phosphocreatine d. fatty acids
Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?
A. The greater the PO2 of the blood, the greater the dissociation of O2 from hemoglobin. B. At normal resting systemic arterial PO2 , hemoglobin is almost 100% saturated with oxygen. C. At normal resting systemic venous PO2 , only about 75% of the hemoglobin is in the form of deoxyhemoglobin. D. More additional oxygen binds to hemoglobin when going from a PO2 of 60 to 100 mmHg, than is added when going from a PO2 of 40 to 60 mmHg. E. As PO2 increases, the saturation of hemoglobin with oxygen increases linearly.