Sally and George are worried that their preteen children will catch an STD or even develop cancers of the penis or cervix. What precautionary measures can the children take, according to this chapter?
What will be an ideal response?
Abstinence, use of latex condoms, and anti-HPV vaccines for both males and females.
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A mechanism of gene regulation that controls the amount of mRNA available for translation is called
____________________. Fill in the blank(s) with the appropriate word(s).
The gene coding for Bt crystals have been genetically engineered into crop plants in order to:
a) make crops less sensitive to herbicides. b) make crops more resistant to insects. c) make crops more sensitive to herbicides. d) make crops grow faster. e) make crops develop larger fruits and vegetables.
Tropical rain forests provide all of the following EXCEPT
A) traditional medicines. B) wood used for cooking by local residents. C) hardwoods for consumers worldwide. D) ecotourism. E) large supplies of gasoline.
What happens when a culture is incubated above the organism's maximum temperature for growth?
a. The cell continues to grow at the normal rate. b. The cells grow much faster than normal because the enzymatic reactions are occurring at a much faster rate. c. The cell membranes collapse, proteins denature, and the cell usually dies. d. The transport of nutrients into the cell is slow; therefore, the cells grow more slowly than normal.