MCAT Biology Question 2: Answer and Explanation

Home > MCAT Test > MCAT biology practice tests

Test Information

Question: 2

2. Which of the following does NOT describe connective tissue cells?

  • A. They account for most cells in muscles, bones, and tendons.
  • B. They secrete substances to form the extracellular matrix.
  • C. In organs, they tend to form the stroma.
  • D. In organs, they provide support for epithelial cells.

Correct Answer: A

Explanation:

While bones and tendons are composed predominantly of connective tissue cells, muscle tissue is considered a different tissue type. Other examples of connective tissue include cartilage, ligaments, adipose tissue, and blood. Connective tissue often secretes substances to form the extracellular matrix, such as collagen and elastin, eliminating choice (B). Choices (C) and (D) are essentially identical and can both be eliminated: in organs, connective tissue often forms the support structure for epithelial cells, called the stroma.

Previous       Next