Food and water are considered disease vehicles
Indicate whether the statement is true or false.
Answer: TRUE
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Coliforms and fecal coliform are often differentiated based on their responses to ________.
A. heavy metals B. salinity C. temperature D. pressure
The influenza virus can infect:a
humans b. pigs c. birds d. humans and pigs e. humans, pigs and birds
Eggs are transported to the uterus by the ____________ tubes.
Fill in the blank(s) with the appropriate word(s)
Voltage-sensitive K+ channels are 1,000 times more permeable to K+ than to Na+ because
a. K+ ions are smaller than Na+ ions. b. K+ ions have a lower charge density than Na+ ions. c. a selectivity filter removes the water molecules from K+ ions but not from Na+ ions. d. K+ ions are more concentrated inside the cell than outside the cell.