Which is the SIMPLEST level of organization in a human being?

A) cells
B) organs
C) tissues
D) organ systems

C?

Option A is correct.

I think it a

The correct answer is A) cells. Cells are the simplest level of organization in a human being. They are the building blocks of all living organisms, including humans. Cells come together to form tissues, and tissues come together to form organs. Organs then work together in organ systems to carry out specific functions in the body. However, at the most basic level, cells are the smallest units of life and are considered the simplest level of organization.

Yes, C) tissues is the simplest level of organization in a human being. To understand why tissues are the simplest level, let's break down the different levels of organization in a human being:

1) Cells: Cells are the basic building blocks of life. They are the smallest living units of all living organisms, including humans. Each cell has specific functions and carries out various tasks.

2) Tissues: Tissues are a group of similar cells that work together to perform a specific function. For example, muscle tissue consists of a group of muscle cells working together to generate movement, while epithelial tissue lines the surfaces of organs and forms protective barriers.

3) Organs: Organs are structures composed of two or more different tissues that work together to carry out specific functions. Examples of organs include the heart, lungs, liver, and brain.

4) Organ systems: Organ systems are a collection of organs that work together to perform a common function or set of functions. Examples of organ systems are the cardiovascular system, respiratory system, digestive system, and nervous system.

Based on this information, tissues are the simplest level of organization because they consist of a group of similar cells working together. Cells make up tissues, tissues make up organs, and organs make up organ systems.