Essays on Eukaryotic Cell

DISCUSSION BOARD

DISCUSSION BOARD

Part 1:

There are several analogies between the biological cellular structures evolution and the individual corporation development. A prokaryotic cell is a cell with no internal organelles; all the functions of the cell are distributed randomly inside, similar to a small company where all the members of the enterprise execute the functions of production, administration, and management. There are no specialized duties between the members of the organization similar to the lack of specialization in all the volume of the prokaryotic cell. In a eukaryotic cell (Diffen, 2014). There is a presence of internal organelles that execute specialized functions ...

Biology Assignment

- Cellular respiration is the metabolic process through which glucose is broken down in the cells to produce energy in the form of ATP. Anaerobic respiration or glycolysis is the anaerobic breakdown of glucose into ATP, which requires no oxygen. This process involves removal of hydrogen and electrons from glucose to generate NADH, pyruvate and energy equivalent to two molecules of ATP. In the absence of oxygen pyruvate undergoes fermentation, whereas in the presence of oxygen, pyruvate is siphoned into the mitochondria and is completely broken down. The citric acid cycle occurs in the matrix of the mitochondria and ...

1) Proto-Oncogenes and Tumor Suppressor Genes are two types of genes that ordinarily keep the cell cycle functioning as it should. Explain the roles of these two types of genes, and explain what can occur when these types of gene are not working properly. Provide at least two different examples of cancers associated with mutations of these types of genes.

The purpose of the proto-oncogenes under normal circumstances is to make sure that cells proliferate, in other words the oncogenes stimulate cell production. But when a normal, healthy ocogene cell becomes mutated or expresses at higher than normal levels it causes cancer. The first oncogenic virus was discovered in 1916 and called the Rous virus after the person who discovered it, Peyton Rous. Rous viruses represent a family of viruses called the retro viruses. Retro viruses contain a genetic material called ribonucleic acid (RNA).

There is always the possibility that RNA will be transcribed into DNA (deoxyribonucleic acid) by an enzyme of ...

Virtual Lab Report

Virtual Lab 1: Virtual Microscopy A. Gauge the size of various biological components and organisms. The Virtual Microscope (copy and paste this address into a new browser window: http://learn.genetics.utah.edu/content/cells/scale/ ) can be used to make these observations. Estimate the size (length and width in microns) of An E.Coli cell is around 0.5µm in width and around 2µm in length. A mitochondrion is around 0.5µm in width and approximately 10µm in length. A Red blood cell is around 5.5µm in width and 7.5µm in length. A virus is approximately 0.25µm in width and ...

Eukaryotes are a class of cells whose cellular contents are enclosed within a nuclear membrane. This is as opposed to the prokaryotes whose cellular contents are not enclosed within a nuclear membrane. The main difference between the eukaryotes and the prokaryotes is the existence of a nuclear membrane surrounding the genetic material of a eukaryotic cell while it is prominently absent. For a long time now there has been raging debate among scientists about the origin of the eukaryotes about 2.5 billion years ago. Due to these differences that have existed in opinion, several scientists have come up with theses that have tried to prove ...