ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
Which of the following does not lose their nucleus at maturity?
Correct Answer: A
Rationale: Companion cells are elongated, thin walled, living cells with cytoplasm and a nucleus. Red blood cells, vessels, and sieve tube cells lose their nuclei at maturity.
Question 2 of 5
In bone, the main cells are
Correct Answer: D
Rationale: Osteocytes are the primary cells in bone, maintaining the bone matrix.
Question 3 of 5
The number of protons in an atom is given by the:
Correct Answer: B
Rationale: The atomic number defines the number of protons, unique to each element.
Question 4 of 5
Deoxyribonucleotides are named according to:
Correct Answer: A
Rationale: Deoxyribonucleotides (e.g., dATP) are named by their nitrogenous base (adenine, thymine, etc.).
Question 5 of 5
The plasma membrane serves to:
Correct Answer: D
Rationale: The plasma membrane encloses, regulates transport, and shapes the cell.