ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
The sequence of nucleotides in a messenger RNA molecule is determined by the:
Correct Answer: A
Rationale: mRNA sequence is a copy of a gene's DNA sequence (complementary to the template strand).
Question 2 of 5
The function of dense, regularly arranged, connective tissue is:
Correct Answer: B
Rationale: Dense regular connective tissue (e.g., tendons) provides strong binding and support.
Question 3 of 5
Because the proteins embedded in the phospholipid bilayer of the plasma membrane can change their positions by moving laterally, this model of the plasma membrane structure is called the model.
Correct Answer: D
Rationale: The fluid-mosaic model describes the dynamic, fluid nature of the phospholipid bilayer with mobile proteins.
Question 4 of 5
The function of the rough endoplasmic reticulum is and the function of the smooth endoplasmic reticulum is
Correct Answer: C
Rationale: Rough ER modifies proteins; smooth ER synthesizes phospholipids and steroids.
Question 5 of 5
In active transport, materials move from concentration to concentration.
Correct Answer: A
Rationale: Active transport moves materials against their concentration gradient, from lower to higher, using energy.