The nuclear membrane is a lipid bilayer enclosing the nucleus and physically isolating it from the rest of the cell, which enables important molecular processes to occur in the nucleus, without interference from the cytoplasm.

two lipid

In eukaryotes, however, the DNA takes the form of compact chromosomes separated from the rest of the cell by a nuclear membrane (also called a nuclear envelope). Eukaryotic cells also contain a variety of structures and organelles not present in prokaryotic cells.

Without the nuclear membrane the cell would collapse and die. Without the cell membrane, any chemical would be allowed to enter. Membranes are very important because they help protect the cell. Materials move across the membrane by diffusion.

Analogy: The nucleus can be compared to a main office of a business because the main office is like a control center just as the nucleus is the control center of a cell. Function: acts like a digestive system which takes in nutrients, breaks them down, and creates energy for the cell.

The Centrosome would be like the spinal cord. The Centrosome is an organelle close to the nucleus cell that contains the centrioles which is only found inside animal cells. They are alike because just like the Centrosome and the nucleus, the spinal cord is close to the brain.

muscles

Human Eyes

When centrosomes are absent, either naturally (as in higher plants or in the female germ cells of many animal species) or due to experimental manipulation, bipolar spindles can form in the vicinity of chromosomes through a centrosome-independent pathway that involves the small GTPase Ran and the action of microtubule …

Different cells have different numbers of centrioles. While, as discussed above, most oocytes have no centrioles, in mammalian epithelial multiciliated cells, such as the ones of the vertebrate respiratory system, 200 to 300 basal bodies are formed in each cell after differentiation.

Centrioles are barrel-shaped structures inside cells, made up of multiple proteins. They are currently the focus of much research, since mutations in the proteins that make them up can cause a broad range of diseases, including developmental abnormalities, respiratory conditions, male sterility and cancer.

animal cell

Abstract. The centrosome acts as the main microtubule-nucleating organelle in animal cells and plays a critical role in mitotic spindle orientation and in genome stability. Yet, despite its central role in cell biology, the centrosome is not present in all multicellular organisms or in all cells of a given organism.

Answer. Answer:The nucleus is called the “director” of the cell because it controls the cell’s activities. The nucleus is the is organelle that directs all of the other functions of the cell. DNA, the genetic material of an organism, is located in the nucleus.

The centrosome is positioned in the cytoplasm outside the nucleus but often near to it. A single centriole is also to be found at the basal end of cilia and flagella. In this context it is called a ‘basal body’ and is connected with the growth and operation of the microtubules in a cilium or flagellum.

In cell biology, the centrosome (Latin centrum ‘center’ + Greek sōma ‘body’) (also called cytocenter) is an organelle that serves as the main microtubule organizing center (MTOC) of the animal cell, as well as a regulator of cell-cycle progression.

Brief About Formation of Spindle Fibres in Plant Cells They consist of fibres wherein the replicated chromosomes link at their centromeres. Plant cells lack centrioles but still, they are capable to form a mitotic spindle from the centrosome area of the cell located just exterior to the nuclear envelope.

centrioles

The centrosome is an important part of how the cell organizes the cell division. And the centrosomes organize the microtubules, so it’s called the microtubules organizing center. The centrosomes duplicate before cell division, so they then help to organize the microtubules and the cell division process.