ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 of 5
Na is the chemical symbol for:
Correct Answer: D
Rationale: Na represents sodium, an alkali metal, on the periodic table.
Question 2 of 5
What type of bond forms between water molecules?
Correct Answer: A
Rationale: Hydrogen bonds form between water molecules due to polarity (O-H attractions).
Question 3 of 5
Identify the 4 classes of macromolecules important to life.
Correct Answer: C
Rationale: The four macromolecules are carbohydrates, lipids, nucleic acids, and proteins.
Question 4 of 5
Fats are generally at room temperature, while oils are generally at room temperature.
Correct Answer: B
Rationale: Fats (saturated) are solid, oils (unsaturated) are liquid at room temperature.
Question 5 of 5
The destruction of a protein's shape caused by heat or pH changes is called
Correct Answer: A
Rationale: Denaturation disrupts a protein's shape, impairing function.