Levels Of Organization Flashcards
What are organelles?
Parts that make up a cell, such as the nucleus, ribosomes, and mitochondria.
What is the basic unit of life?
Cell.
What is a tissue?
A group of similar cells that work together on a specific task.
What are the four main types of tissues in humans?
- Muscle Tissue
- Nerve Tissue
- Epithelial Tissue
- Connective Tissue
What is an organ?
A structure made up of two or more tissues organized to carry out a particular function.
What forms an organ system?
Groups of organs with related functions.
What is the relationship between structure and function at each level of organization?
Structure is closely related to function.
What is the smallest unit of an element?
Atom.
What do atoms combine to form?
Molecules.
Fill in the blank: Atoms combine to form _______.
Molecules.
What is an example of a biomolecule?
- Water
- DNA
- Carbohydrates
What level of organization do organelles belong to?
Organelle Level.
Name a type of muscle tissue.
- Cardiac muscle
- Skeletal muscle
- Smooth muscle
What is the function of the heart?
Pumping blood throughout the body.
True or False: The structure of the lungs is designed for gas exchange.
True.
What reflects the job of a specific organ?
The structure of that organ.
What is the function of epithelial tissue?
Lines surfaces and cavities in the body.
Fill in the blank: The _______ cells in the small intestine absorb nutrients.
Epithelial.
What is connective tissue’s primary role?
Support and bind other tissues.
Name an example of connective tissue.
- Tendon
- Bone
- Fat tissue
What type of tissue is the brain made of?
Nerve Tissue.
What is a key characteristic of muscle cells?
They are needed for body movement.
What is the smallest unit of life?
Cell
Cells are enclosed by a membrane or cell wall and often perform specific functions in multicellular organisms.
What are tissues?
Groups of cells with similar functions
Tissues are essential for the organization of cells into functional units.
What defines an organ?
Two or more types of tissues that work together to complete a specific task
Examples include the heart, liver, and stomach.
What is an organ system?
A group of organs that perform related functions
Organ systems work together to maintain homeostasis in an organism.
What levels of biological organization are mentioned?
Cellular Level, Tissue Level, Organ Level, Organ System Level
These levels represent the hierarchy of structure in biology.
What are the four main types of tissues?
Muscle, Epithelial, Connective, Nervous
Most organs contain all four tissue types.
What is the function of the heart?
Pumps blood
The heart circulates blood throughout the body.
What is the role of the lungs?
Bring in oxygen and eliminate carbon dioxide
The lungs are crucial for gas exchange in the respiratory system.
What is the function of the skin?
Provides a barrier to protect internal structures from the external environment
The skin is the largest organ and plays a vital role in protection.
Fill in the blank: Organs are grouped by _______ for the organ system.
[function]
This grouping allows for coordinated activities among organs.
True or False: An organism has several organ systems that function independently.
False
Organ systems function together to maintain the overall health of the organism.
What does the digestive system do?
Breaks down food and absorbs nutrients
It is essential for providing energy and nutrients to the body.
What is the role of the submucosa in the stomach?
Supports the tissues and controls smooth muscle
The submucosa contains blood vessels and neurons.
