Question

1. which list shows the correct order of levels of organization in the human body from smallest to largest? a. organ → tissue → cell → organ system b. cell → tissue → organ → organ system c. tissue → organ → cell → organ system d. cell → organ → tissue → organ system 2. a group of cells working together to perform the same job is called a: a. organ b. organ system c. tissue d. molecule 3. short response: why is it important that cells are specialized (have different jobs) in the human body?

Explanation:

1. The levels of organization in the human body from smallest to largest are cell → tissue → organ → organ - system. This is a fundamental biological concept.
2. A group of cells working together to perform the same job is called a tissue. Tissues are made up of similar - type cells with a common function.
3. Specialized cells are important because they can perform specific functions efficiently. For example, nerve cells transmit electrical signals, and red blood cells carry oxygen. Each type of specialized cell is adapted to its particular role in the body's overall function.

Answer:

1. b. Cell → Tissue → Organ → Organ system
2. c. Tissue
3. Specialized cells can perform specific functions efficiently for the body's overall operation.