Most cases of sepsis are caused by ________.
A. prions
B. protozoans
C. fungi
D. bacteria
E. viruses
Answer: D
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Glucose-6-phosphate dehydrogenase (G6PD) deficiency is inherited as an X-linked recessive gene in humans. A woman whose father suffered from G6PD marries a normal man
(a) What proportion of their sons is expected to be G6PD? (b) If the husband were not normal but were G6PD deficient, would you change your answer in part (a)?
Movement of the chromosomes during anaphase would be most affected by a drug that prevents _____
A) nuclear envelope breakdown B) elongation of microtubules C) shortening of microtubules D) formation of a cleavage furrow
Which of these plant tissue types most closely corresponds to the "typical" unspecialized plant cell?
A. parenchyma B. sclerenchyma C. phloem D. xylem E. collenchyma
As a physician listens to the heart of a human patient, he hears an an atypical "lub" sound. Which part of the heart might be malfunctioning?
A. the semiliunar valves B. the AV valves C. the right ventricle D. the right atrium