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Question 1 of 10
1. Question
The alveoli, the tiny sacs inside our lungs, provide the ____________ to allow oxygen and carbon dioxide to diffuse between the lungs and bloodstream.
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Question 2 of 10
2. Question
The columns of the periodic table are called groups, which signify _______?
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Question 3 of 10
3. Question
Which of the following is the normal range for blood pH?
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Question 4 of 10
4. Question
What type of chemical reaction is the example below?
Na2S + HCl → NaCl + H2S
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Question 5 of 10
5. Question
Which equation is an example of a decomposition?
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Question 6 of 10
6. Question
Which of the following is in charge of keeping the body awake and alert?
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Question 7 of 10
7. Question
What is also known as red blood cells and transports oxygen and carbon dioxide to the blood?
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Question 8 of 10
8. Question
What is a codon?
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Question 9 of 10
9. Question
Anions are ________ ions formed by ___________ electrons.
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Question 10 of 10
10. Question
Which of the following layers of the dermis is made of strong and elastic protein fibers arranged to form a netlike pattern?
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