2.3 Specialised cells Flashcards
(13 cards)
tissue
a group of similar cells that work together to perform a particular function.
Eg: layer of cells lining your
stomach.
What are specialized cells?
Specialized cells are cells that have a specific structure and function to perform a particular task more efficiently. They are found in multicellular organisms.
What is the function of ciliated cells?
Ciliated cells have hair-like structures (cilia) that move mucus in the trachea and bronchi. This helps trap and remove dust, pathogens, and debris from the respiratory system.
What is the function of neurons (nerve cells)?
Neurons are specialized cells that conduct electrical impulses throughout the body. They transmit signals between the brain, spinal cord, and other parts of the body.
What is the function of root hair cells?
Root hair cells absorb water and minerals from the soil.
What is the function of red blood cells?
Red blood cells transport oxygen from the lungs to the rest of the body using hemoglobin, which binds to oxygen molecules.
What is the function of a sperm cell?
The sperm cell is specialized to fertilize the egg cell by delivering male genetic material.
What is the function of an egg cell (ovum)?
The egg cell is specialized to be fertilized by a sperm cell and support the development of the embryo.
What are the levels of organization in a multicellular organism?
Cell → Tissue → Organ → Organ System
What is the hierarchical organization of living organisms from cell to organ system?
Cell: The basic structural and functional unit of all living organisms.
Tissue: A group of cells with similar structure and function, working together to perform a specific task.
Organ: Made up of different types of tissues working together to perform a specific function.
Organ System: A group of organs with related functions working together to perform a major function in the body.
Why do cells in the body need to divide?
To allow for growth and repair of tissues.
How are new cells produced in the body?
New cells are produced through the division of existing cells.
