What are the main structures within the cell nucleus ?

What are the main structures within the cell nucleus ?
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Within the cell nucleus the main structures are: the nucleolus, an optically dense region, spherical shaped, where there are concentrated ribosomal RNA (rRNA) associated to proteins (there may be more than one nucleolus in a nucleus); the chromatin, made of DNA molecules dispersed in the nuclear matrix during the cell interphase; the karyotecha, or nuclear membrane, the membrane that delimits the nucleus.    
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Description : How are cells with delimited nucleus called ?

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Description : Do bacteria cells have nucleus ?

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How does the plant cell wall react when it is placed under hypotonic medium ?

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What is mass transportation across the cell membrane ?

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How does the sodium-potassium pump present in the cell membrane work ?

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What are the basic constituents of the cell membrane ?

Description : What are the basic constituents of the cell membrane ?

Last Answer : The cell membrane is formed of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a special type of lipid to which one extremity a phosphate group is bound thus ... cell membrane. Cell Membrane Review - Image Diversity: phospholipid bilayer membrane proteins glycocalyx

Concerning permeability what type of membrane is the cell membrane ?

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Last Answer : The cell membrane is a selectively permeable membrane, i.e., it allows the passage of water and some selected solutes. Cell Membrane Review - Image Diversity: cell membrane

What are plant cell vacuoles ?

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What is the function of the plant cell wall ?

Description : What is the function of the plant cell wall ?

Last Answer : The plant cell wall has structural and protective functions. It plays important role in the constraint of the cell size, preventing the cell to break when it absorbs much water.

what substance the plant cell wall is made ?

Description : what substance the plant cell wall is made ?

Last Answer : Is that substance a polymer made of which monomer? The plant cell wall is made of cellulose. Cellulose is a polymer whose monomer is glucose. There are other polymers of glucose, like glycogen and starch. Cell Structure Review - Image Diversity: plant cell wall

Which are the cell organelles that participate in the cell division and in the formation of cillia and flagella of some eukaryotic cells ?

Description : Which are the cell organelles that participate in the cell division and in the formation of cillia and flagella of some eukaryotic cells ?

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On which organelle of the cell structure does intracellular digestion depends ?

Description : On which organelle of the cell structure does intracellular digestion depends ?

Last Answer : What is the chemical content of those organelles? Intracellular digestion occurs by the action of lysosomes. Lysosomes have digestive enzymes (hydrolases) that are made in the rough endoplasmic ... apparatus. Lysosomes are hydrolase-containing vesicles that detach from the Golgi apparatus.

Where in the cell can ribosomes be found ?

Description : Where in the cell can ribosomes be found ?

Last Answer : What is the main biological function of ribosomes? Ribosomes can be found free in the cytoplasm, adhered to the outer side of the nuclear membrane or associated to the endoplasmic reticulum ... structures where protein synthesis takes place. Cell Structure Review - Image Diversity: ribosomes

Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell ?

Description : Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell ?

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What is the difference between plasma membrane and cell wall ?

Description : What is the difference between plasma membrane and cell wall ?

Last Answer : Plasma membrane and cell wall is not the same thing. Plasma membrane, also called cell membrane, is the outer membrane common to all living cells and it is made of a phospholipid bilayer, ... made of peptidoglycans and other organic substances. Cell Structure Review - Image Diversity: cell wall

What is the plasma membrane of the cell ?

Description : What is the plasma membrane of the cell ?

Last Answer : What are its main functions? The plasma membrane is the outer membrane of the cell it delimits the cell itself and a cell interior with specific conditions for the cellular function. Since it ... passage of substances inwards or outwards. Cell Structure Review - Image Diversity: cell membrane

Is there any bacteria made of more than one cell ?

Description : Is there any bacteria made of more than one cell ?

Last Answer : There are no pluricellular bacteria. All bacteria are unicellular prokaryotic.