When blood passes through systemic capillaries, the oxygen saturation of hemoglobin changes
A. from about 99% saturated to about 25% saturated.
B. from about 70% saturated to about 99% saturated.
C. from about 98% to about 75% saturated.
D. from about 40% to about 80% saturated.
Answer: C
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When forming a bond, an atom that has 3 electrons in its second shell and a filled first shell will
A. lose all of the electrons from both its first and second shells. B. lose 3 electrons from its second shell. C. lose all of the electrons from its first shell. D. gain 5 electrons in its second shell.
The initial energy "investment" needed to start a chemical reaction in a cell is called the
a) energy of products. b) energy of reactants. c) potential energy. d) Gibb's free energy. e) activation energy.
About 5 million Americans suffer from some type of autoimmune disease, with the incidence being about three times higher in males than in females
a. True b. False Indicate whether the statement is true or false
Immunity can be transferred from mother to child. When the child's immunity is acquired
A. through the placenta or through breastmilk, it is passive immunity. B. through the placenta, it is passive immunity, but through breastmilk it is active immunity. C. through the placenta or through breastmilk, it is active immunity. D. through the placenta, it is active immunity, but through the breastmilk it is passive immunity.