Which of the following occurs during exhalation?
A. None of the answer options is correct.
B. Negative pressure in the lungs increases.
C. The diaphragm contracts and flattens out.
D. Intercostal muscles elevate the ribs.
E. The volume of the thoracic cavity
increases.
A
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In the placenta, nutrients move from mother to baby by ____
a. activated transport b. the Rh factor c. transport proteins d. simple diffusion
e. HCGIncreased heart rate and blood pressure and unusually heavy sweating are symptoms of
a. hyperthyroidism. b. Grave's disease. c. acromegaly. d. hypothyroidism. e. Wilson's disease.
Muscle cells in oxygen deprivation convert pyruvate to ________, and in this step gain ________.
A) lactate; ATP B) alcohol; CO2 C) alcohol; ATP D) ATP; NADH2 E) lactate; NAD+
Which of the following is diagnostic for Neisseria meningitidis?
A) the presence of Gram-negative diplococci in CSF phagocytes B) a catalase positive reaction C) the presence of lipid A D) the lack of lipooligosaccharide E) the presence of white blood cells in the CSF