Olney was born 2 months premature. According to this chapter, what respiratory problem is he most likely to have, and what can be done to correct it?
What will be an ideal response?
Because Olney is premature, he is more likely than other newborns to have respiratory distress syndrome, or RDS. This condition is due to the lack of sufficient surfactant, which is added to the fetal lungs in the eighth month of pregnancy. It is possible to use mechanical respirators and to administer surfactant (a phospholipid) to infants with this problem.
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Alchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. Many tried repeatedly to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never did succeed in that endeavor
What will be an ideal response?
Which of the following may provide clues to the
evolution of sexual reproduction? a. similarities between mitosis and meiosis at the cellular level b. similarities between mitosis and meiosis at the molecular level c. gene products common to mitosis and meiosis that repair DNA d. gene products produced by an asexually reproducing species that are identical to those that serve in meiosis e. all of these
Which process involves small ribonucleoprotein particles (snRNPs)?
a. initiation of translation b. mRNA splicing c. initiation of transcription d. aminoacylation of tRNA
Which statement best describes the first law of thermodynamics?
a. Matter can be created and destroyed. b. Matter only changes forms. c. Energy only changes forms. d. Energy can be created and destroyed.