Q: What is the atomic number? Choices: - Number of electrons - Speed of electrons - Number of neutrons - number of protons A:
number of protons

Q: Silencing genes through epigenetic mechanisms is commonly practiced on what type of uncontrolled cells? Choices: - giving cells - neutral cells - innoculous cells - cancer cells A:
cancer cells

Q: Q: Covalent solutes separate into what when dissolved? Choices: - second molecules - new molecules - true molecules - individual molecules A:
A: individual molecules

Question: Q: What is the process of moving air into and out of the lungs called? Choices: - naturalization - hydration - insulation - ventilation A:
Answer: ventilation

*Question*
Q: What makes up the mass number of an atom? Choices: - electrons and neutrons - atoms and neutrons - molecules and electrons - protons and neutrons A:
**Answer**
protons and neutrons

Q: Q: Alveolar ducts and broncioles are developing parts of what organ system? Choices: - nervous - immune - digestive - respiratory A:
A: respiratory