Animal Cell Coloring Key Biology Corner
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Animal cells are common names for eukaryotic cells that make up animal tissue. It is different from other eukaryotic cells, such as plant cells, because they do not have cell walls, and chloroplasts, and usually they have smaller, even non-existent vacuoles.
Because they do not have hard cell walls, cells in animals vary in shape.
Animal Cells Consist of:
Animal Cell Organelles and their functions
- Cell Membranes
Cell membrane is the outermost part that encloses cells composed of fat and protein.
Cell membrane functions, namely:
Receiver of stimulation from outside
Regulate the entry and exit of substances
- Endoplasmic reticulum
Endoplasmic reticulum is the part of cells in the form of threads that are in the cell nucleus. Endoplasmic reticulum is divided into two namely fine endoplasmic reticulum (REh) and rough endoplasmic reticulum (REk). The smooth endoplasmic reticulum (REh) is not attached to the ribosome, whereas the rough endoplasmic reticulum (REk) is attached to the ribosome.
The function of the Endoplasmic Reticulum:
A means of transporting substances in their own cells
Protein synthesis (REk)
Synthesize lipids in cells (REh)
Helps in detoxification of harmful cells in cells (REh)
Cytoplasm is cell fluid and everything that dissolves in it, except the nucleus (cell nucleus) and organelles, and cytoplasm consists of protein material and water. Cytoplasm has a complex colloid that is not liquid and not solid which can change depending on the concentration of water, if the water concentration is low it will become soft or generally called gel, but if the water concentration is high it will be thin which is called sol.
The function of cytoplasm:
Source of cell chemicals
The place where cell metabolism takes place
Mitochondria are the largest organelles that are machines in cells. Mitochondria are shaped like cigars or cigarettes which have two curved membrane layers and are called cranes. Oxygen and glucose combine to form the energy (ATP) needed for metabolism and cellular activity in organelles. Mitochondria in their stumps are called mitochondrions.
Generate energy in the form of ATP
Lysosomes, which are organelles in the form of bags bound to membranes, contain hydrolytic enzymes that are used in controlling intracellular digestion in any circumstance.
Entry of macromulecules from outside into the cell by endocytosis mechanism
Digest material using phagocytosis
Control intracellular digestion
destruction of damaged cell organelles (autophagi)
Microfilaments are cell organelles formed from actin and myosin proteins. Microfilament has similarities with microtubules but microfilament is softer and smaller in diameter.
Play a role in cell movement, endocytosis and exocytosis
- Peroxisomes (Micro Bodies)
Peroxisomes are small pockets filled with catalase enzymes that are toxic to water and oxygen which harm cells. Peroxisomes are found in many liver and kidney cells.
Describes peroxides (H2O2) from toxic metabolic remnants
The change from fat to carbohydrate
Microtubules are cell organelles in the cytoplasm found in eukaryotic cells and are long cylindrical in shape with an inner diameter of approximately 12 nm and an outer diameter of 25 nm. Microtbulus is rigid.
plays a role in the formation of flagella, cilia and centrioles
Give cell shape
Ribosomes are dense and small cell organelles with a diameter of 20 nm consisting of 65% ribosomal RNA (rRNA) and 35% ribosomal protein (Ribonucleoprotein or RNP). Inside the ribosome cell is bound to the rough endoplasmic reticulum (REk), or cell nucleus membrane.
Where protein synthesis proceeds
Sentriol is a tubular structure that can be found in eukaryote cells. Sentriol also plays a role in cell division. A pair of centrioles that form a combined structure is called a centrosome.
Function of Sentriol:
The process of cell division in forming spindle threads
Play a role in forming cilia and flagella
- Golgi Body
Golgi bodies or golgi apparatus, namely organelles associated with cell excretion functions. Golgi bodies can be found in all eukaryotic cells and are present in the function of excretion.
Golgi Body Function:
Forms vesicles (sacs) for excretion
Forming a plasma membrane
The nucleus is the nucleus of cells that regulates and controls cell activity both metabolism and cell division.
Place of replication
To maintain the integrity of genes
Control cell activity by managing gene expression
Control metabolic processes in cells
Store genetic information
Nucleolus is the area contained in the cell nucleus (nucleus) which is responsible for the formation of proteins using RNA (ribonucleic acid).
Responsible for the formation of proteins
Nucleoplasma is a solid liquid that is in the cell nucleus (nucleus) containing chromatin fibers.
The function of nucleoplasm:
Forms chromosomes and genes
- Core Membranes
The nuclear membrane is the main structural element of the nucleus which encloses the whole organelle and separates the cytoplasm from the nucleus.
Core Membrane Function:
Cell nucleus protector (Nucleus)
Place of exchange of substances between core material and cytoplasm
Thus the discussion about animal cells, may be useful