Levels Of Organisation Flashcards
(27 cards)
Name the 6 levels of organisations.
- Chemical level
- Cellular level
3.Tissue level - Organ level
- Body systems level
- Organism level
Name the 8 basic cell functions.
- Obtaining nutrients and oxygen from the environment around the cell.
- performing chemical reactions to create energy
- Eliminating waste or by-products
- Synthesising proteins and other components needed for cell structure, growth and function
- Controlling exchange of materials with surrounding environment
- Moving materials internally from one part of the cell to the other
- Sensitive and responsive to changes around it
- Reproducing.
What is the function of the nucleus
Reproducing
What is the function of the nucleolus
Responsive to environment, chemical balance
What is the function of the ribosome?
Synthesis of proteins, delivery of proteins to other structures in the cell
What is the function of the Golgi apparatus
Packaging the proteins
What is the function of the lysosome?
Breaking down brea, eliminating waste/ viruses, anything that is not supposed to be there in the cell
What is the function of the mitochondria
Powerhouse of the cell, generates most of the chemical energy needed to power the cells biochemical reactions.
What is the function of the centriole
Transportation around the cell, cell reproduction
What is the function of the vacuole?
Engulfs and eliminates waste products in the cell
What is the function of the cell membrane?
Controls what enters and exits the cell
What is the function of the cytoplasm?
Liquid inside the cell, transport, supporting the cell structure
Why is the gland cells in the digestive system considered specialised cells?
By taking special advantage of their protein- synthesising ability, the gland cells of the digestive enzymes that break down ingested food. Enzymes are specialised proteins that speed up particular chemical reactions in the body
Why are kidney cells considered specialised cells?
Certain kidney cells are able to selectively retain the substances needed by the body while eliminating unwanted substances in the urine because of their highly specialised ability to control exchange of materials between the cell and its environment
Why are muscle cells considered specialised cells?
Muscle contraction which involves selective movement of internal structures to generate tension in the muscle cells is an elaboration of the inherent ability of these cells to produce intracellular movement
Why are nerve cells consider specialised cells?
Nerve cells generates and transmits to other regions of the body electrical impulses that relay information about changes to which the nerve cells are responsive
What does the muscle tissue do and what example of muscle tissues
Muscle tissues are used for movement, skeletal, cardiac and smooth
What does the nervous tissue do and name some example of where nervous tissue is found in the body
Nervous tissue is used for communication, coordination and control, Brain, spinal cord, nerves, special sense organs
What are epithelial tissues used for and what are some examples of where epithelial tissues found in the body?
Epithelial tissues are used for protection, secretion and absorption, epithelial sheets, secretory glands
What is the role of connective tissue and what are some examples.
Connective tissue is used for structural support e.g. tendons, ligaments, bone, blood
What is an organ?
Organ consists of 2 or more types of primary tissue organised together to perform particular function or functions
What is meant by the term body systems
Each system is a collection or organs that perform related functions and interact to accomplish a common activity that is essential for survival of the whole body
Name the body systems levels.
Reproductive, cardiovascular, immune, respiratory, digestive, skeletal, nervous, urinary, muscular, integumentary, endocrine
What does homeostasis mean?
Maintenance of the relatively stable internal environment is termed homeostasis
