ATI RN
Chapter 2 Cells and Tissues Review Questions Questions
Question 1 of 5
Atoms with more than one energy shell or energy level are most stable when the shell has electrons.
Correct Answer: B
Rationale: Atoms achieve stability with 8 electrons in the outermost shell (octet rule), except helium (2)..
Question 2 of 5
Acidosis is a condition where blood pH is:
Correct Answer: D
Rationale: Acidosis occurs when blood pH drops below the normal range (<7.35).
Question 3 of 5
The polysaccharide that cannot be digested by humans, but may help prevent colon cancer is:
Correct Answer: A
Rationale: Cellulose (fiber) is indigestible but promotes gut health, potentially reducing cancer risk.
Question 4 of 5
Two or more polypeptide chains that are associated give the protein its structure.
Correct Answer: C
Rationale: Quaternary structure involves multiple polypeptide subunits.
Question 5 of 5
The energy carrier molecule in cells is
Correct Answer: A
Rationale: ATP (adenosine triphosphate) is the cell's energy currency.