Nucleus accumbens

Diffusion Across a Plasma Membrane Lab The purpose of this lab was to learn about the permeability of plasma membranes. In this experiment, dialysis tubing was used to simulate the semipermeable plasma membrane of a caterpillar’s intestine. Cooked starch was prepared and mixed with the enzyme amylase to simulate the mixing of the caterpillar’s saliva with a starch/leaf and then placed in the dialysis tubing to simulate the beginning of the digestive process. The enzyme amylase breaks down…

Organisms are composed of countless eukaryotic cells each with a set niche to make sure the body stays balanced. Form their inception cells are programmed like a computer to provide necessary functions for a person’s body. Along the lines of being like a computer all cells need power to operate. Inside the cell its organelles help the cell attain the fuel it needs to operate. Within these group of organelles is what has been aptly named the, “power plant”, of cells for it takes nutrients and…

called the nucleus. This is where the DNA in the cell can be found. However the prokaryotic cell does not have a nucleus. The DNA in a prokaryotic cell is found in an area of the cell call the nucleoid this has no membrane separating it from the rest of the…

Proposed research: Aims and Objectives: Aim1: To address the roles of the Hira complex in rRNA transcription and embryonic development Aim2: To characterise rDNA chromatin organisation in the oocyte Aim3: To elucidate the transcriptional machinery of RNA Polymerase I in the oocyte Experimental Approach: Aim1: To address the roles of the Hira complex in rRNA transcription and embryonic development The Hira histone chaperone complex is an evolutionarily conserved complex, which is composed of…

and epithelial tissues. One of which is that both the connective and epithelial tissues have at least 2 layers. A similarity between the connective and epithelial tissues related to the organelles present and its functions is that they both have nucleus and mitochondria, so both need the production of energy to function and both contain genetic material. Also both the epithelial and connective tissues contain proteins which without they would be unstable and unable to function as they do. There…

A Comparison of Protein Synthesis between Eukaryotes and Prokaryotes The different fundamental organisation of genetic material and organelles between eukaryotes and prokaryotes leads to dissimilar processes of protein synthesis. The larger eukaryotes have a more intricate pathway associated with protein synthesis, due to both the biochemical structure of organelles and enzymes, and also the transport of genetic material within cell. In this essay I hope to explore the differences of gene…

cells have a cell wall whereas eukaryotic cells don’t. The cell wall is what provides shape and protects the cell components. Nucleus- Nucleus is only found in eukaryotic cells. The structure of a cell’s nucleus is membrane bound and contains chromosomes which consist of DNA. The nucleus maintains the integrity of genes and controls the activities of the cell. The nucleus is referred to as the control centre. Mitochondria- Prokaryotic cells do not have mitochondria whereas eukaryotic cells do.…

Gene expression within a eukaryotic cell is directly impacted by the spatial organization of the nucleus [1]. Cellular organization is carried out at the chromosome-level [1], through means of chromosome folding, gene kissing, looping, nuclear lamina associations and protein-nucleic acid interactions within nuclear bodies. Observation of the nucleolus using Raman microspectroscopy may provide more insight into macromolecule density and distribution, as well as provide answers to the still…

In Metaphor and Thought, Hugh Petrie and Rebecca Oshlag argue that “metaphor is one of the central ways of leaping the epistemological chasm between old knowledge and radically new knowledge” (Petrie and Oshlag 583). Scientists compare cognitive domains in order to apply widely “idealized cognitive models” to previously unexplained natural phenomena (Kövecses 173). In absorbing “truly new forms of knowledge and understanding,” learners construct, reject, and accept metaphorical comparisons of…

Observation of mitosis in Onion root tips Answer the following question to its full explanation: 1. What is Cytokinesis? Compare and contrast cytokinesis between plant and animal cells. Cytokinesis is the last step in cell division, where the cytoplasm divide and the two daughter cells appear. In Animals, the cytokinesis processes occurs through cleavage. Firstly, in the old metaphase plate position, a cleavage furrow is formed. On each sides of the furrow, a contractile ring formed of actin…