What is the best way to protect the population against Haemophilus influenza type b infections?
A) Since the chances of complications are rare, no treatment is required.
B) antibiotic treatment after onset of symptoms
C) antitoxin treatment when exposure has occurred
D) use of the Hib vaccine in young children
E) IV fluids are commonly prescribed due to loss of fluids.
Answer: D
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Which of the following is true regarding transformed cells that are plated on growth media containing ampicillin?
A. Each colony began with one antibiotic resistant cell. B. All cells in a single colony are resistant to the antibiotic ampicillin. C. Only the founder cell of a single colony is resistant to the antibiotic ampicillin. D. Cells that did not take up the plasmid will survive on the medium. E. Each colony began with one antibiotic resistant cell and all cells in the colony are resistant to the antibiotic ampicillin.
Based on the endosymbiont theory, which of the following would you expect to find in a chloroplast?
A. cellulose B. a nucleus C. silica D. DNA E. a mitochondrion
Charles is eager to start a new career. He is committed to solve any problems that come his way, and believes he has control over what happens in his life. This suggests that Charles _____.
A. has a Type A personality B. is psychologically hardy C. is at risk for a heart attack D. suffers from delusions of grandiosity
The cell walls of fungi are composed mainly of ____.
A. cellulose B. lignin C. chitin D. pectin E. protein