Answer the following questions true (T) or false (F)
1. To move a molecule into a cell against the concentration gradient requires energy.
2. Exocytosis is an example of active transport of a substance into the cell.
3. Phagocytosis is an example of passive transport.
1. TRUE
2. FALSE
3. FALSE
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Through the process of ____ , some bacteria or archaeons derive energy by combining NH4 + and NO2 - (recall the equation NH4 + + NO2 - N2 + 2H2O)
Fill in the blank with the appropriate word.
____ are good examples of consumers
a. Omnivores b. Detritivores c. Herbivores d. Carnivores. e. All of the above.
Which of the following is a key feature of chordates?
a. having a notochord in the embryonic stage b. possessing many rows of tube feet c. having thin arms that lack organs d. engaging in intracellular digestion
The most common mode for the transmission of Schistosoma haematobium is ________.
A. contaminated meat B. opportunism C. contaminated water D. fecal-oral route E. fomites