The diffused material could be a solid, liquid, or gas. In the same way, the medium in which diffusion takes place could be in one of the three physical states (solid, liquid, or gas). One of the significant features of diffusion is that the movements of molecules must take place along a …
The Cell membrane or Plasma membrane is a thin selectively permeable layer that separates the interior of the cell from its outside environment. The cell membrane serves as the outer boundary of a living cell and also forms a boundary for an internal cell compartment that encloses organelles. It consists of a …
The functions of centrioles in plants and animals are discussed together with the structure. This organelle lacks a membrane and RNA or DNA. However, centrioles exist in most lower plants (algal cells except red algae, some fern cells, male gametes of charophytes, bryophytes, ginkgo, cycads, seedless vascular plants, moss cells), and animal …
What is Genotype? Genotype in a cell is a word that is used commonly, but not easily understood because of its accompanying vocabularies when defining it. Truly, the work of Gregory Mendel with the pea plant began to open people’s understanding of genes. He experimented on Pisum sativum (pea plant), in order …
Cytoplasm Definition The Cytoplasm of both plant cells and animal cells is the jellylike material formed by 80% of the 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. It also contains many …
Endoplasmic Reticulum (ER) is found in the cytoplasm of most cells and forms a system of membranes. The membranes form the boundaries of channels that may be arranged in the form of flattened sacs (or cisternae) or of tubules. Because of the presence of the Endoplasmic Reticulum, the cytoplasm is divided into …
The Rough endoplasmic reticulum got its name from the appearance of Ribosomes on the membrane of the rough ER when observed with a light microscope. In most places the membranes forming the Endoplasmic reticulum are studded with minute particles of RNA called ribosomes. The presence of these ribosomes gives the membrane a rough …
Plant cell structure is best explained with a labeled plant cell diagram. The plant cell parts can be grouped into 3 parts: plant cell wall, cell surface membrane, and cytoplasm (inside which the plant cell organelles are suspended). This is based on how they are seen with a light microscope and electron …