2) Explain the difference between cytoplasmic membrane, cytoplasm and
nucleus.
Answers
Step-by-step explanation:
In eukaryotic cells, which have a nucleus, the cytoplasm is everything between the plasma membrane and the nuclear envelope. In prokaryotes, which lack a nucleus, cytoplasm simply means everything found inside the plasma membrane.
Answer:
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Cytoplasm:
It is jelly like substance that occur between the plasma member and the nucleus. Cell organelles like mitrochondria Ribosomes ,Golgi body etc. are present in cytoplasm .The cytoplasm helps in exchange of materials between cell organelles.
Cytoplasmic membrane:
The plasma membrane (also known as the cell membrane or cytoplasmic membrane) is a biological membrane that separates the interior of a cell from its outside environment. The primary function of the plasma membrane is to protect the cell from its surroundings.
Nucleus:
it is a spherical structure located in centre of the cell .It is also known as brain of the cell as it control the activities of cell .It is separated from cytoplasm cell membrane called nuclear membrane.
Step-by-step explanation:
cytoplasmic membrane:
• its also called the cell membrane or plasma membrane, it covers the cell.
• It is a bilayer with lipid molecules, it is only 7 nm (nanometre) thick
• It has phosolipids, cholesterol and some other proteins synthesized by ribosomes in RER.
• A place where all metabolic reactions of a cell take place
• It is an SPM (Semi-permeable Membrane)
• processes like osmosis happen trough this layer
• It helps in transport of materials in and out of cell
• It protects the cell
• It binds the cell together
• it is renewed by the process of membrane biogenesis.
• Outermost covering of animal cell.
Cytoplasm:
• The part of cell which occurs between nucleus and cell membrane
• It is a semi solid/ fluid and partially base material of a cell.
• All the cell organelles are embedded in it along with other substances like toxic substances, food waste etc.
• It mainly consists of water, making it a bit of fluid.
• It's the aqueous ground substance called cytosol, it is a true solution.
• Its inner granular mass is called endoplasm and clearer layer is caller cell cortex / ectoplasm.
•It has no shape, without it the cell with dry up and eventually die
• It binds the cell organelles into one single portion.
• Living cytoplasm is always in the state of movement
• It contains nucleus
• It is the most abundant in animal cells
Nucleus:
• Large centrally located spherical cellular component
• It controls the cell
• It consists of Hereditary information of an organism (In chromosomes which have DNA which has this information) and nucleolus embedded in the nucleoplasm
• It has a membrane called nuclear membrane, it also had a nuclear envelop directly connected to Endoplasmic reticulum which helps in transportation of commands given by the nucleus to the organelle.
• Nucleolus is rich in protein and RNA and is a site for making Ribonucleic Acid too
• This cell organelle has a double membrane and the nuclear envelop has manypores called nucleopores.
• Nucleolus is the factory of ribosomes
• It is very essential for a cell, but there are some cells which lack this nucleus, like an RBC in human blood.
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