Organelle

are responsible for associating with motor proteins attached to the vesicles. Microtubules can also expand or shrink in length in order to establish dynamic structures that can efficiently change the internal organization of the cell, and capture organelles through the cytosol. Intermediate filaments are made up of the protein keratin. Their primary function is to strengthen the internal structure of a cell. Microfilaments are the smallest among the three cytoskeletal filaments. They consist of…

Describe this theory in a paragraph. Be sure to use these terms: semiautonomous organelles, symbiotic relationship, protoeukaryote, purple bacteria, cyanobacteria, mitochondria, and chloroplasts. Through research it was discovered that mitochondria and chloroplasts are able to reproduce independently as well as contain their own DNA, RNA, mRNA, tRNA,and ribosomes which is referred to as semiautonomous organelles. It is by means of this research that the endosymbiont theory…

Within the skeletal muscle cells, there are many organelles. Each cell contains a plasma membrane called the sarcolemma, covering the outer surface of the cell (Ivy Rose). The sarcolemma protects the muscle cell and allows for its shape to be kept. From the sarcolemma, tunnel-like extensions called transverse tubules pass through the muscle fiber (Ivy Rose). These transverse tubules connect the sarcoplasmic reticulum with the sarcolemma (Graham and Parker 117). The sarcoplasmic reticulum is a…

to their place within the cell. While the ribosomes in this case are attatched to the endoplasmic reticulum, this is not their only position, they can also be found freely within the cell cytoplasm (the area within the cell that contains the cell organelles) The S.E.R is in charge of storing, and secreting non-protein products such as carbohydrates and lipids etc. (kent, 2000,…

Eukaryotic cells have a membrane-bound nucleus and organelles. Compartmentalisation of Eukaryotes means the cell is divided into many membrane-bound compartments. This is very important because many molecules are concentrated together and so the rate of reactions inceases within the cell. Also, the separate…

is made up from the nuclear envelope and nuclear pores. Like the plasma membrane, the nuclear membrane separates the nucleus from the other organelles and contents of the cell. The nuclear membrane is made up of the nuclear envelope and nuclear pores. The nuclear envelope is a two layer membrane that separates the nucleus from the cytoplasm and other organelles. However, molecules must have a way to enter the nucleus. This is why the nuclear envelope forms nuclear pores. These are small…

because the cell is larger in size and there is a true nucleus present which contains DNA. In prokaryotic cell there isn’t a nucleus and the DNA is free within the cytoplasm. Also Beta cells have many organelles and there is mitochondria present, which in a prokaryotic cell there are fewer organelles and there aren’t any mitochondria present. Beta cells in the pancreatic tissue release insulin when blood sugars are high, in order for insulin to be released it needs be produced and the insulin is…

Cholesterol has a unique structure that includes four linked hydrocarbon rings forming the steroid structure. The hydrocarbon tail links to one end of the steroid and a hydroxyl group linked to other end. While the hydroxyl group is able to form hydrogen bonds with nearby carbonyl oxygen of phospholipid. Additionally, cholesterol is an amphipathic macromolecule because it has a water-soluble polar region that dissolves in water, but almost the entire is non-polar which does not dissolves in…

Eukaryotic cells are known for its organelles variety. Each organelle has its function so consequently each organelle differentiates from one another by its content. In this lab, the cells from a cauliflower were studied with the purpose to separate nuclei and mitochondria content from a solution. To achieve the results, the cauliflower solution had to go through differential centrifugation, microscopy, and succinate dehydrogenase assay. For the fist part of the lab density played a key role in…

organisms to stay alive. Cells are responsible for providing structure within organisms, absorbing nutrients from food sources and converting nutrients into energy. Cells also contain various organelles which are also responsible for carrying out specialised functions within the cell. For example, ribosomes are an organelle found in plant cells and are responsible for creating protein synthesis, which is where ribonucleic…