Levels of Organizations

Question 1

What are the levels of organizations?

Answer 1

1. the chemical levels
2. the cellular levels
3. the tissue levels
4. The organ levels
5. The system levels
6. The Organism level

Question 2

The definition and some examples of chemical level

Answer 2

the smallest and simplest level within the structural hierarchy, includes the tiniest building blocks of matter; Atoms and its combined form molecules.

• Atoms: the simplest units of matterEssential atoms- Carbon (C), Hydrogen (H), Oxygen (O), nitrogen (N), phosphorous (P), Calcium (Ca) and Sulfur (S)
• Molecules: two or more atoms joined togethere.g.) Deoxyribonucleic Acid (DNA), glucose, proteins

Question 3

The definition and some examples of Cellular levels

Answer 3

made up of the smallest unit of living matter; the cells

• Cells: the basic structural and functional units of an organismMain parts of the cells- Cell membrane, Cytoplasm, Organelles, NucleusExamples)
  • myocyte (muscle cells)
  • nerve cells (nerurocyte)
  • sperm cells (spermatocyte)

Question 4

The definition and some examples of Tissue levels

Answer 4

Definition : Groups of similar cells that have a common function (must contain two different cells)

• 4 basic types of cells / Example
  
  1. Epithelial tissues - covers surfaces and lining internal organs (skins, lining of intestine)
  2. Connective tissues - supports and binds structures (Bone, blood, adipose tissue, ligament)
  3. Muscle tissues - contracts to cause movement (skeletal, cardiac, smooth muscles)
  4. Nerve tissues - transmits signals

Question 5

The definition and some examples of Organ levels

Answer 5

Definition: Composed of two or more tissues to form an organ that perform a specific function within a body.

Examples:

• Heart (pumps blood)
• Lungs (gas exchange)
• Stomach(Composed of Smooth muscle tissues, Connective tissues, nerves and epithelial tissues)
• Muscle (like the biceps brachii, made up of muscle tissue, connective tissue, blood vessels, nerves)

Question 6

The definition and some examples of System levels

Answer 6

Definition: Groups of organs that work together to perform complex body functions.

Example - There are 11 systems

• Cardiovascular System - Consists of heart, blood vessels to circulate blood through out body to provide nutrients and oxygen
• Integumentary
• Muscular
• Skeletal
• Nervous
• Endocrine
• Lymphatic
• Respiratory
• Digestive
• Urinary
• Reproductive

Question 7

The definition and some examples of Organism levels

Answer 7

Definition:

highest level of organization

Sum total of all structural level working together

Example: human being