What occurs when the resiratory center stops sending nerve signals to the diaphragm and the rib cage?
A) Muscles contract and inspiration occurs
B) Muscles relax and inspiration occurs
C) Muscles relax and expiration occurs
D) Muscles contract and expiration occurs
Answer: C) Muscles relax and expiration occurs
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Vitamin ____ is produced in humanskin when exposed to sunlight
a. A b. B1 c. C d. D e. folic acid
Which of the following is a function of activated complement proteins?
a. lysis of pathogens b. enhancing inflammation c. coating pathogens to enhance phagocytosis d. lysis of pathogens and enhancing inflammation e. lysis of pathogens, enhancing inflammation, and coating pathogens to enhance phagocytosis
What condition will fail to hold in a linear probability model?
A. The determining function will be linear in parameters. B. The coefficient estimates will minimize the sum of squared residuals. C. The moment conditions will define the estimate of the coefficients. D. The errors will be homoscedastic.
All the following are correct about detergents, except
A. they are active in the presence of organic matter. B. in low concentrations they are bacteriostatic. C. they are ineffective against the tuberculosis bacteria. D. the most effective ones are positively charged. E. they are polar molecules that act as surfactants.