What are some of the hazards of smoking? What methods might society employ to try to reduce the number of people exposed to secondhand smoke?
What will be an ideal response?
Smoking causes heart disease, chronic bronchitis, emphysema, and lung cancer, among other major health problems. Methods to reduce smoking among the public include education and banning smoking indoors; also, some state governments have raised cigarette taxes considerably.
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Antimicrobials may produce
A. allergic reactions. B. toxic effects. C. suppression of normal microbiota. D. All of the choices are correct
Even though the three domain taxonomic system used in this book is widely accepted, there is a key
relationship between common ancestry domains that is unclear. That relationship is
a. between Archaea and Eukarya. b. between Archaea and Bacteria. c. between Bacteria and Eukarya. d. between Archaea, Eukarya, and Bacteria. e. whether the three domains all have a common ancestor.
Cellulose is a polysaccharide synthesized by plants and digested by humans for energy.
a. true b. false
Which of the following types of genetic material undergo recombination during meiosis?
a. sister chromatids b. sister chromatids and homologous chromosomes c. all four chromatid d. homologous chromatids