ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
What is the name of the mechanism that ensures that there is a higher concentration of sodium ions in the extracellular fluid than in the intracellular fluid?
Correct Answer: B
Rationale: The "pump"(or ATPase) transports Na+ out and K+ into the cell.
Question 2 of 5
Which is NOT true of connective tissue(CT)?
Correct Answer: A
Rationale: Being close packed in a property of epithelial tissue. In CT the cells are widely spaced, being separated by the ground substance.
Question 3 of 5
Which of the following enables ions such as sodium to cross a plasma membrane?
Correct Answer: C
Rationale: One function of integral protein in the PM is to form channels to allow for the passage of ions.
Question 4 of 5
Which one of the following organelles is considered as the "energy producing" centre of the cell?
Correct Answer: C
Rationale: Mitochondria are where ATP molecules are produced from glucose.
Question 5 of 5
Which of the following is a component of the plasma membrane of a cell?
Correct Answer: D
Rationale: Despite the term "plasma" A& C are wrong. And it is phospholipids, not glycolipids that occur in the membrane.