Chapter 4 Section A 4A Quiz Order Among Cells Chapter 4 Section A 4A Quiz

Objectives I will be able to describe the levels of cellular organization within a multicellular organism. I will be able to explain the division of labor within a multicellular organism. I will be able to compare how the division of labor relates to the church functioning as a body.

Key Concepts How do unicellular and multicellular organisms differ? How does cell differentiation lead to the organization within a multicellular organism?

Unicellular Organisms Unicellular organisms can survive by themselves. Unicellular organisms carry out all life processes, including responding to the environment, getting rid of waste, growing, and reproducing, within one cell.

Unicellular Organisms A unicellular organism made of one prokaryotic cell is called a prokaryote. A unicellular organism made of one eukaryotic cell is called a eukaryote.

Colonial Organisms Organisms which are made of many cells that usually live together but are able to live independently

Multicellular Organisms Multicellular organisms are made of many types of eukaryotic cells working together, each with a specialized function.

Multicellular Organisms All cells in a multicellular organism come from one cell: a fertilized ovum (egg); a zygote

Multicellular Organisms The process by which cells become different types of cells is called cell differentiation.

Multicellular Organisms Stem cells are unspecialized animal cells that are able to develop into many different cell types.

Multicellular Organisms Plants have unspecialized cells similar to animal stem cells. These cells are grouped in areas of a plant called meristems.

Multicellular Organisms Tissues are groups of similar types of cells in multicellular organisms that work together to carry out specific tasks.

Multicellular Organisms Humans, like most other animals, have four main types of tissue: Muscle Connective Nervous epithelial

Multicellular Organisms The three main types of plant tissue are: Dermal Vascular Ground

Multicellular Organisms Organs are groups of different tissues working together to perform a particular job.

Multicellular Organisms Organ systems are groups of different organs that work together to complete a series of tasks.

Multicellular Organisms

Division of Labor Each tissue and each organ performs its special function to keep the whole organism alive. This is also true of the body of Christ.

I Cor. 12:12-22 One Body with Many Members 12 For just as the body is one and has many members, and all the members of the body, though many, are one body, so it is with Christ.13 For in one Spirit we were all baptized into one body—Jews or Greeks, slaves[a] or free—and all were made to drink of one Spirit. 14 For the body does not consist of one member but of many. 15 If the foot should say, “Because I am not a hand, I do not belong to the body,” that would not make it any less a part of the body. 16 And if the ear should say, “Because I am not an eye, I do not belong to the body,” that would not make it any less a part of the body. 17 If the whole body were an eye, where would be the sense of hearing? If the whole body were an ear, where would be the sense of smell? 18 But as it is, God arranged the members in the body, each one of them, as he chose. 19 If all were a single member, where would the body be? 20 As it is, there are many parts,[b] yet one body. 21 The eye cannot say to the hand, “I have no need of you,” nor again the head to the feet, “I have no need of you.” 22 On the contrary, the parts of the body that seem to be weaker are indispensable,