7.6.2-Levels of Organization

Multiple Choice

The basic unit of structure and function of living organisms

• organ

• organ system

• cell

• tissue

• organism

Cell

• The smallest unit of life (building blocks of life)

• Cells are specialized by size and shape for the job they do.

• Example: nerve cell, also called a neuron

​Let's Review:

Multiple Choice

What is a prokaryote?

• A multi-celled organism with no nucleus

• A single-celled organism with no nucleus

• A multi-celled organism with a true nucelus

• A multi-celled organism with no nucleus

• blue-green algae

• bacteria

• mycoplasma

​Examples of prokaryotes

​

• Bacteria are prokaryotic cells

• Bacteria are classified according shape

• Bacteria are round (coccus), rod (bacillus) or spiral shaped (spirillum)

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​bacteria

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Multiple Choice

Which of these is not a form of classification for bacteria?

• Round-shaped "coccus"

• Rod-shaped "bacillus"

• Spiral-shaped "spirillum"

• Color of the bacteria

• True nucleus (Eu rhymes with True)

• DNA is inside a membrane

• Contains other membrane-bound organelles

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eukaryotes

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Multiple Choice

What is a eukaryote?

• A multi-celled organism with a true nucleus

• A multi-celled organism without a nucleus

• A single-celled organism with a true nucleus

• A single-celled organism without a nucleus

• Animal Cells

• Plants Cells​

Examples of eukaryotes

Multiple Choice

What kind of eukaryotic cell can make its own food and contains specialized organelles?

• Animal Cells

• Plant Cells

Multiple Choice

What kind of eukaryotic cell cannot make its own food and has to get it from another source?

• Animal Cells

• Plant Cells

​Let's Review:

Specialized cells perform specific functions.

Your body began as a single fertilized egg.

If that egg cell simply divided to make lots of identical cells, it would not form a baby. To form all of the different tissues that make up your body, cells need to specialize, or develop specific functions.

For example, some cells become skin cells and others become stomach cells. Cell differentiation* is the process by which cells that are not specialized develop into their specialized forms.

Cell Differentiation

So why do stomach cells function differently than skin cells? They do not have different DNA. Almost all cells in your body have the same full set of DNA.

Different types of cells simply use different genes contained in the DNA. Skin cells use one part of the DNA information—for skin cells—and stomach cells use a different part of the DNA information— for stomach cells.

Stem cells can develop into different cell types.

Once a cell differentiates, it stays in its specialized form. For example, once a cell becomes a stomach cell, it cannot turn into another type of cell. 

Stem cells are a special type of body cell that can develop into different types of cells.

Stem cells can:

• divide and renew themselves for a long period of time, 􏰢 

• remain undifferentiated, or 􏰢

• develop into many different types ofspecialized cells.

When a stem cell divides, it forms either two stem cells or one stem cell and one specialized cell.

Fill in the Blank

__________ are a special type of body cell that can develop into different types of cells.

Fill in the Blank

_______________ is the process by which cells that are not specialized develop into their specialized forms.

Multiple Choice

A group of similar cells that work together to form the same function is called .......

• organ

• cell

• organ system

• organism

• tissue

Tissue

• The same type of cells grouped together that are working together to do a specific job.

• Ex: nerve tissue, muscle tissue

Multiple Choice

What is the difference between a cell and a tissue?

• cell is basic unit of life; tissue is group of cells that work as one

• cell is group of tissues; tissue is basic unit of life

• cell is basic unit of life; tissue is groups of different cells

• cell is group of organs; tissue is group of different cells

Multiple Choice

True or False: Tissues are made of several different types of cells

• True

• False

​Connective tissue: strong, like bones and tendons

Epithelial tissue: protective layers, like the skin

Muscle tissue: skeletal, smooth, and cardiac

Nervous tissue: makes up the brain and spinal cord​

​Human Tissues

Multiple Choice

Human tissue that is used to protect outer layers (like the skin) and inner layers (like the inside of organs):

• connective tissue

• epithelial tissue

• nervous tissue

• muscular tissue

Multiple Choice

Which muscle tissue is found in the stomach?

• smooth

• cardiac

• skeletal

• connective

​Muscle tissue that attaches to the bones

​​Skeletal Muscle Tissue

​Muscles of the organs.

​​Smooth Muscle Tissue

​

​Muscle of the heart

​​Cardiac Muscle Tissue

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Multiple Choice

Tissues are specialized cells but they do not have the same function

• true

• false

Multiple Choice

Which of the following is a tissue responsible for making the body move and tissues of the body shorten and contract.

• nerve

• muscle

• connective

• epithelial

Draw

Tendons are b2m (bone to muscle)

Ligaments are b2b (bone to bone)

Draw arrows to what might be ligaments

Reorder

What is the correct order of levels of organization from the lowest to highest level?

• cell

• tissue

• organ

• organ system

• organism

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

​WATCH THE VIDEO...

Tissues are a group of cells all working together.

Examples of plant tissues include

• xylem

• phloem
  
  

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​TISSUES

Multiple Choice

Which of these is an example of plant tissue?

Organs are a group of tissues working together.

Examples of plant organs include

• ​leaf

• stem

• fruit

• flower

• root

​ORGANS

Multiple Choice

Which of these is NOT a plant organ?

Multiple Choice

What do tissues form?

• Blood

• Organ Systems

• Organs

• Nails

Multiple Choice

This is an example of

• Cell

• Tissue

• Organ

• Organ System

Multiple Choice

The Circulatory System is an Organ System that ensures oxygen, nutrients, and other vital substances get spread throughout the body.

What are Organ Systems made of?

• Organisms

• Organs

• Milk

• Nutrients

Multiple Choice

A group of different tissues working together to do a job is called a/an _____.

• tissue

• organ

• stem cell

• organ system

Multiple Choice

The heart contains different types of tissue. What level is the heart?

• cell

• organ system

• organ

• tissue

Multiple Choice

Tissue that works together to perform a function

• organ

• cell

• organ system

• organism

Multiple Choice

A structure that is composed of different kinds of tissues

• organ

• cell

• organ system

• organism

• tissue

Organ systems are a group of organs working together.

Examples of plant systems include

• ​root system (everything below the ground)

• shoot system (everything above the ground)
  
  

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​ORGAN SYSTEMS

Multiple Select

Which of these is a plant organ system?

(Select TWO correct answers)

Multiple Choice

Which is the correct order for levels of organization from simple to complex?

• cell, organ, tissue, organ system, organism

• organism, organ system, tissue, cell, organism

• cell, tissue, organ, organ system, organism

• organ, tissue, cell, organism, organ system

Multiple Choice

A Dog is an Organism.

According to Levels of Organization, what are organisms made of?

• Orange Juice

• Organelles

• Organ Systems

• Oreos

Multiple Choice

This is a example of...….. 

• organ system

• cells

• organ

• tissue

Multiple Choice

A group of organs that work together to perform big jobs for your body is an organ system.

• True

• False

Multiple Choice

What do you have when organ systems work together?

• organs

• organism

• cells

• tissue

Organisms are a group of systems working together.

The plant organism is the whole plant, including what is above AND below ground.

​ORGANISM

Multiple Choice

The picture to the left shows an object found in nature.

This object is best described as a(an)

• organ

• organism

• tissue

• cell

Multiple Choice

The picture to the left shows a corn plant.

Which level of organization is best represented by the corn plant?

• tissue

• organ

• organism

• organ system

Multiple Choice

Which is an example of an organism?

• a beetle

• a lake

• a rock

• a shell

Multiple Choice

Any living thing made up of one or more cells....

• organ

• cell

• organ system

• organism

• tissue

Multiple Choice

Groups of cells with similar functions.

• Organ

• Molecule

• Tissue

• Organelle

Multiple Choice

Groups of cells with similar functions.

• Organ

• Molecule

• Tissue

• Organelle

Multiple Choice

Group of tissues with similar functions.

• Organelle

• Cell

• Tissue

• Organ

Multiple Choice

Group of organs with similar functions.

• Organism

• Cell

• Organ

• Organ system

Multiple Choice

All of the organ systems working together to maintain life

• organism
• organ
• cell
• tissue

Multiple Choice

Several different organs working together to perform specific functions

• tissue
• organism
• organ system
• cells

Multiple Choice

Several different tissues working together to perform a specific function

• organ
• organ system
• organism
• cells

Multiple Choice

A groups of similar cells that perform a specific function

• tissue
• organ system
• organ
• organism

Multiple Choice

The basic unit of life

• atoms
• cells
• molecules
• organelles

Multiple Choice

Cells, tissues, organs, and organ systems, make up the structure of a?

• single celled organism

• multicellular organsim

Multiple Choice

What is the most simplest level of organization?

• tissue

• cell

• dirt

• organ

Multiple Choice

What is the most complex level of organization?

• organ

• organism

• animal cell

• organ system

Multiple Choice

What is an example of an organ system?

• a tree

• stomach

• red blood cells

• A branch with leaf's

Multiple Choice

What is an example of an organ?

• plants

• Nerve tissues

• Liver

• Digestive system

Multiple Choice

Is a leaf an example of an organ?

• yes

• no

Multiple Choice

Similar cells form 

• tissue 
• organs 
• food 
• muscle 

Multiple Choice

Which is the correct order of increasing complexity?

• Cell

  Tissue

  Organ

  Organ system

• Tissue

  Cell

  Organ

  Organ system

• Organ system

  Tissue

  Cell

  Organ

• organism

  cell

  tissue

  organ

Multiple Choice

When organ systems work together, they form another level of organization called

• organisms

• tissues

• cells

• organs

Multiple Choice

The lungs are composed of four types of tissues. Which phrase best describes the lungs?

• a specialized cell

• an organ

• an organ system

• an organism

Multiple Choice

Which of the following phrases describes an organ?

• a collection of interacting sensors

• similar cells that function as one

• different tissues working together

• parts of a communication system

Multiple Choice

What are the levels of organization found in animals from smallest to largest?

• cell, tissue, organ, organ system, organism

• cell, organelle, tissue, organ system, organ, organism

• cell, molecule, tissue, organ, organ system, orgranism

• organism, organ system, organ, tissue, cell,

Multiple Choice

What are the levels of organization found in animals from smallest to largest?

• atom, molecule, organelle, cell, tissue, organ, organ system, organism

• molecule, atom, cell, organelle, tissue, organ system, organ, organism

• atom, organelle, cell, molecule, tissue, organ, organ system, orgranism

• organism, organ system, organ, tissue, cell, organelle, molecule, atom

Multiple Choice

Heart, level, stomach, brain are examples of which level of organization?

• organs

• organ system

• tissue

• cell

Multiple Choice

Cardiovascular, respiratory, nervous and digestive are examples of which level of organization?

• organ system

• organs

• cells

• tissues

Multiple Choice

Plants and animals are classified as which level of organization?

• organisms

• organs

• organ systems

• population

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1. UNIcellular organisms perform ALL functions they need to survive within ONE SINGULAR CELL. MULTIcellular organisms are made up of different types of cells with specialized functions needed for survival.

2. Cell differentiation is the process by which cells become different types of cells with specific functions.

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