Hierarchy of Structures
Lowest Hierarchy level is at Organelles within a cell. They obtain energy from food and reproduction.
-Cells with the same function are collected into larger groups called Tissues.
-Tissues are collected into Organs, carry out single task, like oxygenated blood (lungs...
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Hierarchy of Structures
Lowest Hierarchy level is at Organelles within a cell. They obtain
energy from food and reproduction.
-Cells with the same function are collected into larger groups
called Tissues.
-Tissues are collected into Organs, carry out single task, like
oxygenated blood (lungs), or filter out waste (kidneys).
-Organs work together in systems that perform coordinated
large-scale functions,
like nourishing the body (digestive) or protecting the body from
attacks (immune).
Cell Parts
Organelles: Cell parts that function within a cell. They coordinate with other
organelles to performs a cell's basic function, like energy processing and
waste excretion.
~Examples: Ribosomes, Golgi Apparatus, Mitochondria, The Nucleus.
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The Nucleus
-Nucleus: Small structure that contains Chromosomes and
Regulates the DNA of a cell. Defining structure of eukaryotic cells.
It is responsible for the passing on of genetic traits
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between generations.
-Contains: nuclear envelope, nucleoplasm, a nucleolus,
nuclear pores, chromatin, and ribosomes.
Chromosomes
Highly condensed, threadlike rods of DNA. DNA is genetic material that stores
information about the plant or animal.
Chromatin
Consists of the DNA and Proteins that make up chromosomes.
Nucleolus
Structure contained within the nucleus, consists of proteins. Small, Round, and
does not have a membrane. Involved in protein synthesis, and synthesizes and
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stores RNA.
Nuclear Envelope
Encloses the nucleus. Consists of inner and outer membranes made of lipids.
Nuclear Pores
Involved in exchange of material between nucleus and the cytoplasm.
Nucleoplasm
Liquid within the membrane and is similar to cytoplasm.
Cell Membrane
"Plasma Membrane"
-Made of Lipids and Proteins
-Isolates the cell from its external environment while still
enabling the cellar to communicate with the outside
environment.
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