ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
Which type of intracellular signaling involves direct cell-to-cell contact and signal transmission?
Correct Answer: D
Rationale: Contact-dependent signaling requires physical cell contact.
Question 2 of 5
Which type of cellular transport involves the movement of ions or molecules with the help of carrier proteins?
Correct Answer: B
Rationale: Active transport uses carrier proteins and energy.
Question 3 of 5
The type of junction in which cytoskeletal fibers between two cells join to hold the cells together.
Correct Answer: B
Rationale: Adhesion junctions (desmosomes) use cytoskeletal fibers to anchor cells together, providing mechanical strength.
Question 4 of 5
Monocytes
Correct Answer: B
Rationale: Monocytes arise from bone marrow, increase via cytokine stimulation from lymphocytes, and can become multinucleated giant cells in chronic infections.
Question 5 of 5
The pH
Correct Answer: A
Rationale: Normal arterial pH is 7.35-7.45; urine pH is typically acidic (<7) to excrete H+.