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Describe the following:

Nuclear envelope
Nucleus
Plasma membrane
Rough endoplasmic reticulum
Ribosomes
Golgi Apparatus
Peroxisome
Intermediate Filaments
Microtubule
Microfilament
Microvilli
Centrosome Matrix
Centrioles
Mitochondrion
Lysosome
Cytosol
Smooth Endoplasmic Reticulum
Nucleolus
Chromatin

User Crwils
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Answer:

Nuclear Envelope: In eukaryotic cells, nuclear envelope (nuclear membrane) surrounds the nucleus and protect genetic material. it consist of two lipid bilayer membranes an outer nuclear membrane and inner nuclear membrane.

Nucleus: Nucleus is an membrane-bounded organelle that is responsible for the functions to control gene expression and DNA replication during cell cycle.

Plasma membrane: Plasma membrane (cell membrane) is a phospholipid bilayer that surrounds the cell. It is selectively permeable in nature to ions and organic molecules and that regulates movement of substances across the cell.

Rough endoplasmic reticulum: Rough endoplasmic reticulum is an organelle that is made up of tubules, vesicles and cisternae and responsible for protein synthesis in eukaryotic cells.

Ribosomes: Ribosomes found within all living cells, made up of RNA (Ribonucleic acid) and associated proteins and serves as the site of biological protein synthesis.

Golgi Apparatus: Golgi Apparatus is defind as a vesicles and folded membranes in the cytoplasm that function in sorting, modifying and packaging of proteins for secretion.

Peroxisome: Peroxisome is an organelle present in the cytoplasm and functions in breaking down fatty acids used in the formation of membrane and as fuel for respiration.

Intermediate Filaments: Intermediate Filaments are cytoskeletal structure that contribute in cell shape, and cell and organelle motility.

Microtubule: Microtubule are polymers of tubulin which forms part of the cytoskeleton and functions in supporting and give shape to the cell.

Microfilament: Microfilament are the part of cytosketal system that are made up of actin polymer and serves as the track for the movement of motor proteins called myosine.

Microvilli: Microvilli are the finger like projection on the surface of some cells that functions in the absorption and secretion of nutrients by increasing the surface area of the cell.

Centrosome Matrix: Centrosome Matrix are defined as the network of small fibers surrounding the centrioles in cells and responsible in organizing microtubules, cell division, and provide structure for the cell.

Centrioles: Centrioles are the cell organelles present in the eukaryotic cell made of protein tubulin which is surrounded by shapeless mass of dense material celled as pericentriolar material.

Mitrochondria: Mitochondria is known as the power house of the cell which is double membrane bound organelle. It stores the energy which is required by the cells of the body.

Lysosome: An organelle which is present inside the cell to store the degrated substances inside the cell.

Cytosol: The aqueous component of the the cell which has various cell organelles and particles dissolve in it.

Smooth Endoplasmic Reticulum: It is a meshwork membrane which is found in both plant and animal cell. Its main function is to make cellular products like hormones and lipids.

Nucleolus: It is found in the nucleus of the eukaryotic cell which is found during interphase. It is the largest part of nucleus which is the site for ribosome biogenesis.

Chromatin: It is a complex structure made of DNA and protein which helps in the packing very long DNA molecules in a compact form.

User Sam Carleton
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