16. Steve has a chronic Hepatitis C infection. We know this because in addition

Question

16. Steve has a chronic Hepatitis C infection. We know this because in addition to the virus, he also has circulating in his blood. A) IgG B) IgM C) IgD D) IgA E) IgE High levels of carbon dioxide cause the following EXCEPT: A) cause blood pH to rise B) stimulate the respiratory center to induce a yawn C) create an acidic environment D) cause local vasodilation of blood vessels 17. 18. Steroid hormones influence cellular activities by: A) binding to surface proteins and stimulating the release of hormones. B) activating cell metabolism after binding to surface proteins. C) binding to surface proteins and changing the permeability of the cell membrane. D) binding to DNA and forming a gene-hormone complex. E) all of the above 19. Fibers from the Vagus Nerve carry a signal to the_which results in A) Right Ventrical, decrease heart rate B) Left Ventrical, Increase heart rate C) AV Node, decrease heart rate D) SA Node, Increase heart rate 20. In the regulation of hormone production and secretion may be controlled by a variety of mechanisms which include the following EXCEPT A) positive feedback B) decreased receptor expression on target cell membrane C) endocrine cell deterioration through apoptosis (cell death) D) negative feedback 21. A heartbeat of more than 100 beats per minute is called and will c outputand A) B) C) D) E) tachycardia decrease cardiac output bradycardia decrease cardiac output arrhythmia increase cardiac output fibrillation increase cardiac output none of the above 22. The pH of the adult female vagina is normally_ A) neutral B) alkaline C) acidic D) acidic only after ovulation

Explanation / Answer

16. a) IgG

IgG is the most abundant antibody present in blood and its concentration increases with increase in infection intensity as it is the antibody that fights against viruses.

17. a) cause blood pH to rise

Increase in CO2 levels causes blood pH to decrease making it acidic.

18. d) binding to DNA and forming a gene-hormone complex

Steroid hormone acts by binding to Gene first.

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