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Science - Test 6

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Q1: Carbon has an atomic number of 6. Which of the following is true about the isotope C-12?

A. C-12 possesses 7 neutrons and 5 electrons in its nucleus
B. C-12 possesses 7 protons and 5 neutrons in its nucleus.
C. C-12 possesses 6 protons and 6 electrons in its nucleus.
D. C-12 possesses 6 neutrons and 6 protons in its nucleus.
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Q2: Which of the following best describes adaptive immunity

A. The initiation of Internal defenses, such as phagocytes and natural killer cells
B. A response to specific traits of specific pathogens
C. The body's barrier defenses, such as mucous membranes and secretions
D. The initiation of inflammatory response
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Q3: Which of the following describes why water has a concave, or downward-curving, meniscus when poured in a glass beaker?

A. Glass has a higher density than water,
B. The adhesive forces with the glass are greater than the cohesive forces.
C. Water has a higher density than glass.
D. The cohesive forces with the glass are greater than the adhesive forces.
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Q4: The following diagram summarizes the carbonic acid-bicarbonate ion buffer system of the blood.CO2 + H2o   HC03- + HOWhich of the following equations shows the reaction that takes place when there are excessive protons (H*) in the blood?

A. H2CO3- + H+ ---> H2CO3
B. H2CO3 ---> HCO3- + H+
C. CO2 + H2O ---> H2CO3
D. H2CO3 ---> CO2 + H2O
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Q5: The following diagram summarizes the carbonic acid-bicarbonate ion buffer system of the blood.CO2 + H2o   HC03- + HO Which of the following equations shows the reaction that takes place when there are excessive protons (H*) in the blood?

A. H2CO3-+H+ H2CO3
B. H2CO3 HCO3- + H+
C. CO2 + H2O H2CO3
D. H2CO3 CO2 + H2O
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Exam Details
Total Questions: 50 practice questions
Category: ATI TEAS
Subcategory: SCIENCE
Domain: SCIENCE - Section.
Last Updated: Nov 29, 2025
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