1.1 Levels Of Biology Flashcards
Organism
A term that can be applied to all forms of life. Organisms maintain an internal order that is separated from the environment.
- Atoms
An atom is the smallest unit of an element that has the chemical properties of the element. All matter is composed of atoms.
- Molecules are…
Atoms bond with each other to form molecules.
Example of polymer.
Polypeptide. Formed of many molecules bonded together to be called a macromolecule.
Examples of important macromolecules found in living organisms.
Carbohydrates, proteins, and numeric acids (DNA & RNA)
- Cells
Simplest unit of life. Surrounded by a membrane and contains of molecules and macromolecules
What are unicellular organisms composed?
Composed of one cell.
Multicellular is…
As plants and animals, contain many cells.
- Tissues are in multicellular organism
Many cells of the same type associate with each other form tissues. An example is muscle tissue.
- Organs are…
Complex multicellular organisms.
What is the organ composed of ?
Two or more of types of tissues. For example, the heart is composed of several types of tissues, including muscle, nervous, and connective tissue.
- Organism
The members of the same species are closely related genetically.
Are all living beings considered organisms?
Yes. As well Biologists classify organisms as belonging to a particular species, which is a related group of organisms that share a distinctive form and set of attributes in nature.
- Population
A group of organisms of the same species that occupy the same environment.
- Community: A biological community is…
An assemblage of populations of different species.
How are biological communities determined from?
The types of species found in a community are determined by the environment and by the interactions of the species with each other.
- Ecosystems
Is a field of work beyond living organisms with studying their physical environment.
Ecologists analyze ecosystems because…
Formed by the interactions of a community of organisms with their physical environment.
- Biosphere
Includes all of the places on the Earth where living organisms exist.
Where is life found?
In the air, in bodies of water, on the land, and in the soil.
What are the five core concepts of biology?
- Evolution
2.Structure and function - Information flow, exchange, and storage
- Pathways and transformations of Energy and Matter
Evolution
The diversity of life evolved over time by processes of mutation, natural selection, and genetic exchange.
Structure and Function
Basic units of structure define the functions of all living things.
Information flow, exchange, and storage
The growth and behavior of organisms are activated through the expression of genetic information
Pathways and transformation of energy and matter
Biological systems grow and change via processes that are based on chemical transformation pathways and are governed by the laws of thermodynamics.
