Levels of Organization！

Question 1

Cell differentiation

Answer 1

The process by which cells become different types of more specialized cells

Question 2

Tissues

Answer 2

A group of similar types of cells that work together to carry out specific tasks.

Question 3

Organs

Answer 3

A group of different tissues working together to perform a particular job

Question 4

Specialized cells

Answer 4

Cells are the basic units of structure and function in the body. However as the organism increases in size the need for specialized cells increases. Through a process called cell differentiation, cells can become specialized for specific functions; such as a nerve cell, a muscle cell, a red blood cell etc.

Question 5

Tissues

Answer 5

When the organism gets big enough, similar cells are grouped together to create tissues that work together to carry out specific tasks. Each different type of tissue has specific functions. There are 4 types of tissues in animals: muscular, nervous, epithelial and connective. There are 3 types of tissues in plants: dermal, vascular and ground.

Question 6

Organs

Answer 6

Different tissues can also work together to carry out even more functions. These are called organs; they consist of more than one type of tissue working together to perform a particular job. Each type of tissue within the organ will carry out a specific function that is necessary for the organ to complete its function. A great example of this is the stomach. The stomach contains all 4 types of animal tissue, each tissue performs a specific job to help the stomach to work properly.

Question 7

Organ Systems

Answer 7

Typically organs do not function alone and are part of a larger organ system. An organ system consists of multiple organs that work together to complete a series of tasks. For example the human digestive system is made up of the stomach, liver, small intestine, and large intestine. These organs work together to break down food in order to absorb nutrients, and take them into the body.
In the human body, there are a number of organ systems:

Question 8

Organ systems

Answer 8

The respiratory system
The nervous system
The digestive system
The circulatory system
The muscular system
The skeletal system

Question 9

Organ systems

Answer 9

A group of organs that work together to perform a specific task