Difference Between Prokaryotes And Eukaryotes

A process called DNA transcription makes up the sequence of the amino acids and then a specific protein is produced. Each protein structure has a specific function in it. Changing the structure will then change its function since it rearranges everything in the protein structure. Proteins are there for an essential part of the body, since it helps form body tissues, like muscles, organs and is used within many biological processes as well. For example proteins are used in our body to make things such as enzymes,

Both of the sequence specific DNA-protein interaction, and sequence non-specific interaction are essential for life. A sequence specific DNA-protein interaction is found to be occurred during transcription, where a transcription factor interact in a specific sequence of a DNA. And a sequence non-specific DNA-protein interaction is found to be occurred when DNA interact with histone protein, in a sequence independent manner,

Relebogile Moloko 1155553 Introductory life sciences Assignment 1 Prokaryotes and eukaryotes are two different levels of cells. Prokaryotes are cells that do not have a membrane bound nucleus or organelles sounded by membranes and eukaryotes are cells that have a membrane bound nucleus as well as membrane bound organelle. They have obvious structural differences which result in differences functions and cell efficiency. From my research, I have observed that eukaryotes have structural advantages over prokaryotes.

Enzymes are homogeneous biological catalyst that work by lowering the activation of a reaction pathway or providing a new pathway with a low activation energy. Enzymes are special biological polymers that contain an active site, which is responsible for binding the substrates, the reactants, and processing them into products. As is true of any catalyst, the active site returns to its original state after the products are released. Many enzymes consist primarily of proteins, some featuring organic or inorganic cofactors in their active sites. However, certain ribonucleic acid (RNA) molecules can also be biological catalysts, forming ribozymes.

DNA contains the information for the production of protein. The nucleus gives the signal to let the cell grow, divide or make proteins. A nuclear envelope surrounds the nucleus, allowing only certain substance to enter and exist. There are five parts to the nucleus the nucleus consist of the following main parts: The Nucleolemma or nuclear membrane (karyotheca). This

Chapter Vitamin B12 Absorption and Transport in Human Body Omar Abuyaman, MSc Department of Clinical Biochemistry, Aarhus University hospital, Aarhus, Denmark. Abstract Mammals are unable to synthesize B12. Instead, they have a sophisticated multistep pathway for specific and efficient transport of this vitamin from its food source to the target body cells.

The functions mainly for the nucleolus are RNA-related, and it was also detected the ability of RNA processing and assembly f ribonucleoproteins (RNPs) Another role of the nucleolus is the ability to maturate, assemble and export RNP particles as signal recognition particle, telomerase RNPs and processing of precursor transfer RNAs and U6 small nuclear RNAs. [4] An additional role in the regulation of the cell cycle was observed, where it manages the stress responses, telomerase activity, and aging.

The movement of the endocytosed protein which is destined for the apical surface to fuse with and also the movement of extracellular materials from one side of the epithelial cells to another can be termed as transcytosis. With respect to concept, transcytosis can be grouped into three processes namely; endocytosis, exocytosis and transcellular transport (Pravda,2011). Though transcytosis is tightly controlled by the cell it also has the potential for transepithelial movement of bacteria and other pathogens, hence it sometimes becomes an etiologic factor in the body(Pravda,2011). Trancytosis occurs in hepatocytes and this phenomenon is a typical example of transcellular transport . Here the apical membrane form bile and the basolateral membrane face blood.

Thus the cell and helps in maintaining the shape of the cell. 4. The cell membrane is primarily composed of proteeins and lipids. While lipids help to give their flexibility and proteins monitor and maintain the cell's chemical climate and assist in the transfer of molecules across the membrane.

Cell Division As a eukaryotic organism grows, cells divide and create new cells based on its DNA. This is called cell division. Cell division is the process when a parent cell divides into two or more daughter cells. Cell division occurs as part of the cell cycle.

1. How does DNA encode information? DNA is a double-stranded helix composed of a phosphate backbone and deoxyribose, and encodes information by the sequence of its nucleotide bases, which are composed of adenine, thiamine, guanine and cytosine. DNA undergoes transcription, which produces single-stranded mRNA, which uses uracil in place of thiamine. Next step is translation, in which the RNA becomes a protein, which then can act as structural units or enzymes.

An operon is a part of DNA found in bacteria that controls gene regulation. Operons are controlled by an on switch known as the promoter. The Promoter is a place where the protein RNA polymerase binds. RNA polymerase is an enzyme that binds to DNA during transcription and unravels the DNA strands. RNA polymerase also transcribes the sequence of a messenger RNA (mRNA) molecule.

Wolxy s(Vulpes Lupus) are the offspring of a red fox and a gray wolf. Both parents are members of the kingdom Animalia which makes their offspring a member of the kingdom Animalia as well. The offspring follows the same classification of its parents which is domain: Eukarya, phylum: Chordata, class: Mammalia, order: Carnivora, and family: Canidae. This offspring, like its parents, is a vertebrate which means that it has an endoskeleton that is supported by skeletal muscle tissue. It also has loose connective tissue and epithelial tissue that connects and protects its vital organs.