ATI RN
Cells Tissues and Organs Comprehension Questions Questions
Question 1 of 5
The basic building blocks of all matter are:
Correct Answer: C
Rationale: Elements are the fundamental substances that make up all matter, existing in various states (solid, liquid, gas).
Question 2 of 5
Which of the following is NOT a property of water?
Correct Answer: A
Rationale: Water has a high heat capacity, absorbing large heat amounts with small temperature changes.
Question 3 of 5
Normal blood pH is:
Correct Answer: D
Rationale: Normal blood pH is tightly regulated at ~7.35-7.45, averaging 7.4.
Question 4 of 5
The macromolecule that contains the most energy per gram is:
Correct Answer: B
Rationale: Lipids yield ~9 kcal/g, higher than carbohydrates or proteins (~4 kcal/g).
Question 5 of 5
The sequence of amino acids in a polypeptide is the structure.
Correct Answer: D
Rationale: Primary structure is the linear sequence of amino acids.