ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 of 5
Why does the plasma membrane of a cell present a barrier to the movement of electrolytes through it?
Correct Answer: B
Rationale: Electrolytes, being charged particles are not able to dissolve their way through the lipid plasma membrane(which is non-polar). Hence it is a barrier to them.
Question 2 of 5
What is the name of the process of division of a somatic cell's nucleus into two daughter nuclei?
Correct Answer: C
Rationale: Mitosis involves somatic cells. Meiosis refers to the production of the sex cells.
Question 3 of 5
Which of the following is the correct combination of the components for the nucleic acid RNA?
Correct Answer: A
Rationale: RNA must have the sugar ribose. Thymine exists in DNA but not RNA, where it is replaced with uracil.
Question 4 of 5
A type of intercellular connection in which the outermost portions of the two cell membranes have a tight seal together is termed a(n):
Correct Answer: A
Rationale: Tight junctions form a seal between cells.
Question 5 of 5
Chondrocytes are to cartilage as osteocytes are to
Correct Answer: D
Rationale: Osteocytes are to bone as chondrocytes are to cartilage.