Biological Hierarchy 6e14z

Year 11

Biology

Andres Bereznev

Biological Hierarchy

Bio-Sphere

Holistic Approach (referenced to the whole)

Biome Ecosystem

Biological Hierarchy

Community Population Individual

Orgasystem Organs Tissue Cells Organelles Molecules Atoms

Reductistic Approach (Referenced to a specific part)

Atom: The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons.

Molecule: A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

Organelle: In cell biology, an organelle is a specialized subunit within a cell that has a specific function, and it is usually separately enclosed within its own lipid bilayer.

Cell: The cell is the basic structural, functional and biological unit of all known living organisms. Tissue: In biology, tissue is a cellular organizational level intermediate between cells and a complete organism

Organs: In biology, an organ (or viscus) is a collection of tissues ed in a structural unit to serve a common function.

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Year 11

Biology

Andres Bereznev

OrgaSystem: In biology, a biological system (or organ system or body system) is a group of organs that work together to perform a certain task. Common systems, such as those present in mammals and other animals, seen in human anatomy, are those such as the circulatory system, the respiratory system, the nervous system, etc.

Individual: a single human being as distinct from a group, class, or family. Population: A population is a summation of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding.

Community: in biology, a community is a group of interacting living organism ssharing a populated environment.

Ecosystem: n ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows.

Biome: Biomes are climatically and geographically defined as contiguous areas with similar climatic conditions on the Earth, such as communities of plants, animals, and soil organisms, and are often referred to as ecosystems.

Bio-Sphere: The biosphere is the global sum of all ecosystems. It can also be termed the zone of life on Earth, a closed system, and largely self-regulating.

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