Cytoplasm Function, Definition, Cytoplasm Structure and Diagram, Cell Cytosol and Cytoplasm

Photo of Cytoplasm Function, Definition, Cytoplasm Structure and Diagram, Cell Cytosol and Cytoplasm

Cytoplasm Definition

The Cytoplasm of both plant and animal cells is the jellylike material formed by 80% of water that contains a clear liquid portion called the cytosol and various particles of different shapes and sizes these particles are proteins, carbohydrates, lipids or electrolytes in nature. The Cytoplasm also contains many organelles with distinct structure and function.

What is Cytoplasm?

The Cytoplasm is the part of the cell located outside of the nucleus that is bounded cell membrane. It is composed of different organic and inorganic compounds like water, different nucleic acid and enzymes. The outer area of cytoplasm is more concentrate, less granular and hard this is called the Ectoplasm while the central area that is less concentrated is called the Endoplasm; the cytoplasm is made therefore made of Endoplasm and Ectoplasm. Different organelles like plastids, mitochondria, endoplasmic reticulum, ribosome, golgi bodies, lysosome, centrosome and different nonliving substances are present in the cytoplasm.

Cytoplasm Meaning

The outer part of the cell is termed the cytoplasm a word derived from the Greek Kytos, which means something that is hollow or covers, and Plasma which means something that molded. Thus the cytoplasm is essentially molded around the nucleus. The Cytoplasm is a watery solution of minerals, gases, organic molecules, and cell organelles that is found between the cell membrane and the nucleus.

Cytoplasm Structure

Cytoplasm is made up of two zones:

  1. Ectoplasm: Peripheral part of cytoplasm, situated just beneath the cell membrane
  2. Endoplasm: Inner part of cytoplasm, interposed between the ectoplasm and the nucleus.

Cytoplasm Diagram

Diagram of a Cell showing the Cytoplasm and the Cytosol with organelles suspended in the Cytoplasm
Diagram of a Cell showing the Cytoplasm and the Cytosol with organelles suspended in the Cytoplasm


Cytoplasmic Organelles in Plant and Animal cells

  1. Plastids
  2. Mitochondria
  3. Endoplasmic reticulum
  4. Ribosome
  5. Golgi bodies
  6. Lysosome
  7. Peroxisome
  8. Centrioles
  9. Secretory vesicles
  10. Centrosome
  11. Chloroplast

Cytoplasmic organelles are the cellular structures embedded in the cytoplasm (with each organelle having a definite structure and specific functions) these organelles are considered as small organs of the cell. Some organelles are bound by limiting membrane while others do not have limiting membrane.

Cytoplasm Function (What is the function of Cytoplasm?)

The function of the cytoplasm is mainly to hold different organelles and perform some organic functions. The cytoplasm plays an important role in a cell, serving as a “molecular soup” in which organelles are suspended and held together by a fatty membrane.

What does the cytoplasm do?

  1. The cytoplasm plays a mechanical role by moving around inside the membrane and pushing against the cell membrane helping to maintain the shape and consistency of the cell.
  2. The cytoplasm provides suspension to the organelles.
  3. The cytoplasm is a storage space for chemical substances indispensable to life, which are involved in vital metabolic reactions, such as anaerobic glycolysis and protein synthesis.

Cytosol Definition and Meaning

The cytosol is the clear fluid portion of the cytoplasm. Another name for Cytosol is Hyaloplasm.

What is Cytosol?

The cytosol is a gel-like fluid portion of the cytoplasm that is crucial to many cell processes. A variety of enzymes in the cytosol catalyze specific chemical reactions in the body such as the ten enzymes that break down one glucose molecule into two molecules of pyruvate during the process of Glycolysis. The cytosol also stores energy in the form of triglycerides or glycogen in masses called inclusion bodies. Molecules that are to be released from the cell, or secreted, are stored in membrane-bound sacs called secretory vesicles; also, the molecular composition of the cytosol is critical to the function of cells as it occurs in nerve cells and muscle cells where the ionic composition of the cytosol plays a crucial role in their activities

Cytosol Function

  1. The Cytosol contains hundreds of enzymes, such as those of the glycolytic pathway, that produce building blocks for larger molecules and break down small molecules to liberate energy.
  2. All the machinery converging on the ribosomes for protein synthesis (mRNA, transfer RNA, enzymes, and other factors) is also contained within the cytosol.
  3. Oxygen, CO2 , electrolytic ions, low-molecular-weight substrates, metabolites, and waste products all diffuse through cytosol, either freely or bound to proteins, entering or leaving organelles where they are used or produced.

Cytosol and Cytoplasm

The cytoplasm consists largely of a fluid component named as the Cytosol, bathing metabolically active structures called Organelles (some of which may have their membranes like Mitochondria while others may not such as protein complexes like ribosomes and proteasomes. In addition to the organelles, there are protein components of the cytoplasmic cytoskeleton, which determines the shape and motility of eukaryotic cells.

Cytosol Vs Cytoplasm

The Cytoplasm is the gel-like portion of the cell containing both organelles that are suspended in the other fluid portion. This fluid or water portion of the cytoplasm is called the Cytosol many chemical reactions take place within the cytosol of the cytoplasm.

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