Atomic nucleus

A. Eukaryotic cells store their genetic information in chromosomes made of DNA. This DNA is copied during interphase of the cell cycle. Replication is semiconservative, meaning one strand of the replicated DNA would be from the original molecule and one would be new. The parental strands serve as templates for the new strands. Replication can begin when helicase breaks the hydrogen bonds responsible for holding the two complementary strands together, ultimately causing the molecule to unwind…

A 12-well tissue culture plate was used to carry out the LIVE/DEAD Assay. Well “A” contained the untreated HepG2 cells. Well “B” contained camptothecin, which is used as a control for killing the HepG2 cells instead of the use of plumbagin. Well “C” contained the compound Epigallocatechin Gallate. Well “D” remained empty, because a vehicle treatment is not needed for this experiment. Each well contained 1 ml of HepG2 cells. A negative and positive control where both set up in the 12-well tissue…

To create tissues and organs, there are six basic processes that a cell is required to go through. The six processes include: cell division, cell growth, differentiation, migration, apoptosis and cell connections. Cell division is a cell progressing through the cell cycle in order to multiply. Cell growth is a cell using the nutrient and optimal environment to grow in volume. Differentiation is a cell turning into specialized cells due to different gene regulators. Migration is a cell moving to…

Evaluation: The graph that was produced shows that Whitefish Blastula cells spend the most amount of time in interphase followed by prophase, metaphase, anaphase and finally telophase. Relative time was found by finding the total number of cells in each phase and then dividing it by the total number of all cells counted and finally multiplying by 100. Doing this showed that the cell that takes up the most amount of time is interphase at 71.35%. Although I was unable to confirm the accuracy of…

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…