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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Which of the following controls the flow of chyme from the stomach into the small intestine? |
Pyloric sphincter |
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During electron capture, a type of nuclear reaction, an electron is added to the nucleus, causing a proton to transform into a neutron. Which of the following describes the change in atomic mass and atomic number during this reaction? A. Atomic mass decreases, and atomic number decreases B. Atomic mass stays the same, and atomic number increases. C. Atomic mass stays the same, and atomic number decreases. D. Atomic mass increases, and atomic number stays the same. |
C. Atomic mass stays the same, and atomic number decreases. |
The atomic number represents the number of protons. The atomic mass includes both protons and neutrons. |
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Which of the following describes a role of hydrochloride acid (HCI) in the digestive system? A. It converts trypsinogen into trypsin. B. It neutralizes bacteria ingested with food. C. It neutralizes the pH of stomach contents. D. It protects the walls of the stomach from digestive activity. |
B. It neutralizes bacteria ingested with food. |
HCI is a component of gastric juice. It accounts for the low pH of the stomach contents. |
