BIO 142 EXAM III PRACTICE QUESTIONS WITH CORRECT ANSWERS

BIO 142 EXAM III PRACTICE QUESTIONS WITH
CORRECT ANSWERS




1) Gases move across a membrane because of what law?
A. Boyle
B. Bohr
C. Dalton's
D. Haldane -- Correct Answer ✔✔ C. Dalton's



2) Which is NOT true about the equation?
CO2+H2O<->________<-> H+ +HCO3-
A. Moves to the right at the tissue cells
B. Moves to the left at the lungs
C. Middle molecules is H2CO3
D. Increased inspiration rate moves it to the right -- Correct Answer ✔✔
D. Increased inspiration rate moves it to the right



3) Which is NOT true?
A. Pons smooths out breathing during speech & exercise
B. PO2 is controlled within +/- 3 mm Hg
C. Drop in pH in CSF increases respiration rate & depth
D. Emotions and pain affect hypothalamus to modify respiration -- Correct
Answer ✔✔ B. PO2 is controlled within +/- 3 mm Hg

, 4) Increasing ____________ will cause pH to ____________ which causes
__________?
A. PO2, drop, Bohr effect
B. PO2, increase, Haldane effect
C. PCO2, drop, Bohr effect
D. PCO2, increase, Haldane effect -- Correct Answer ✔✔ C. PCO2, drop,
Bohr effect



5) Which is NOT mechanical digestion?
A. Mastication
B. Segmentation
C. Pepsin
D. Stomach churning -- Correct Answer ✔✔ C. Pepsin



6) Which is NOT matched correctly?
A. Mucosa- used for absorption
B. Serosa- stratified squamous
C. Submucosa- has enteric neurons to regulate gland activity
D. Muscularis externa- has myenteric plexus -- Correct Answer ✔✔ B.
Serosa- stratified squamous



7) Which is NOT true?
A. Salivary glands- controlled by facial and hypoglossal nerves
B. Chief cells release pepsinogen
C. Deglutition center is in the medulla oblongata
D. Tongue helps create bolus -- Correct Answer ✔✔ A. Salivary glands-
controlled by facial and hypoglossal nerves



8) Which is NOT true?
A. Buccal phase of swallowing is voluntary