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Questions and Answers
Which of the following is a trait common to all cells?
Which of the following is a trait common to all cells?
- Plasma membrane (correct)
- Nucleus
- Cytoplasm
- DNA
Which of the following statements about Escherichia coli (E. coli) is true?
Which of the following statements about Escherichia coli (E. coli) is true?
- It can make vitamins that mammals can't produce
- It is a type of dangerous germ that can severely damage the human intestinal lining
- It is a harmful bacterium found in the intestines of warm-blooded animals
- It is one of the most common types of intestinal bacteria in mammals (correct)
Which of the following is a function of helpful intestinal bacteria?
Which of the following is a function of helpful intestinal bacteria?
- Causing serious human infections
- Making vitamins that mammals can't produce
- Severely damaging the human intestinal lining
- Crowding out dangerous germs (correct)
What is the main function of the cell's plasma membrane?
What is the main function of the cell's plasma membrane?
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What is the minimum number of Escherichia coli (E. coli) bacteria that can cause a serious human infection if ingested?
What is the minimum number of Escherichia coli (E. coli) bacteria that can cause a serious human infection if ingested?
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