Cell Essays

Plant Cell and Animal Cell

Plant and animal cells have several differences and similarities. For example, animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed, rectangular shapes. Animal Cell Plant Cell Cell wallAbsentPresent (formed of cellulose) ShapeRound (irregular shape)Rectangular (fixed shape) VacuoleOne or more small vacuoles (much smaller than plant cells).One, large central vacuole taking up 90% of cell volume. CentriolesPresent in all animal cellsOnly present in…

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Effect of the Latest Technological Gadgets

With technological gadgets are becoming trend, it is being observed that today a majority of youths prefer to own the latest technological gadgets. Technological gadgets have its advantages. Nevertheless, in my opinion, I think using frequent hours of technological gadgets have more disadvantages and it hinders healthy development among young people. To begin with, almost all of youths will use their mobile phone, computer and other devices when they are free and therefore they will indulge in the world of…

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Cell Analogy – Mall

Cell Membrane – The cell membrane protects the inside of the cell from outside containments, keeps the cell in contact and maintains its shape. This relates to mall security guards. They’re job is to protect the mall, make sure everything is intact and everybody is safe. Without the cell membrane, containments could enter, the security guards do the same. Without them, bad people or things could happen in the mall. Cell Wall – The cell wall provides structural support and…

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Cells Biological

I) Observation of starch grains 1. A potato was cut by using a cork barrier to obtain a piece of it. 2. The small piece of potato was placed on the centre of the glass slide and enough pressure was applied with fingers to squeeze it until small amount of juice was force out. The piece of potato was discarded leaving the juice behind on the glass microscope slide. 3. A drop of water was added to the potato juice…

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The Prokaryote Cell

Capsule – almost all prokaryotes have a polysaccharide layer outside of the cell wall polymer, also known as the capsule. A discrete polysaccharide layer is the true capsule, while a gelatinous matrix which engulfs the cells is the slime layer or the biofilm. This capsule is constituted by polysaccharides and only occasionally by amono acids or peptides. Capsules have several functions. Capsules, and slime layer are responsible for adhereance of the cell to the surface. These also protect bacterial cells…

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Diffusion and Osmosis

Diffusion and osmosis are very important in biological process. Diffusion is the movement of molecules or ions from a region of their high concentration to a region of their low concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane. To gain a better understanding of diffusion and osmosis, we examine multiple experiments to show diffusion and osmosis in animal cell, plant cell and synthetic cell. In our first experiment, we weight a decalcified chicken egg and place…

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Cell Theory and Knowledge and Understanding

Explain how the advance in technology allowed the progressive accumulation of knowledge and understanding of the cell theory The technological advancements, in the scientific field, have opened opportunities for scientists to accumulate knowledge and understanding of the cell theory and have thus provided justification to the living organisms that exist. Notably, prior to the proposal of the cell theory, limited knowledge and understanding of what humans comprised of was evident and thus the theory of spontaneous generation was brought forth….

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Lab 4 Diffusion and Osmosis

1. Diffusion and Osmosis, June 4, 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis, which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and…

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The Endomembrane System

The endomembrane system is a system of organelles working together for the same goal. This system compartmentalizes the cell restricting certain metabolic reactions to certain areas of the cell. Phospholipids are a vital element of the endomembrane system it is these bilayers that cover structures like the nucleus, vacuoles, the endoplasmic reticulum (ER), vesicles, and the cell itself. It is because of the unique properties of the phospholipid bilayer that vesicles are able to so easily fuse with the Golgi…

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Human Cloning

“What we call process is the exchange of one nuisance for another nuisance.” This quote by Henry Havelook Ellis describes the outcome of cloning that the world has seen so far and will continue to see if strict laws regulating cloning research are not set into place. Due to governmental regulations, cloning research has slowed down. If such legislations continue, the process of cloning will continue to demolish. If these laws proceed, the creation of the human race will remain…

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Beetroot

Title: The effect of temperature on beetroot’s cells membrane Objective: To use beetroot to investigate the effect of temperature on cell membranes andrelate the effect observed to the membrane’s structure and properties Introduction: Beetroot Beetroot is one of many type of beets known as Beta Vulgaris.It can be used in cooking and drinking as it is one of the source of vitamins, minerals, nutrients and antioxidant as well including magnesium, potassium, sodium and vitamin C and betaine. Betaine in the…

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Cell Fractionation

Introduction Mitochondria is an organelle found in eukaryotic cells that play a role in biochemical processes such as respiration and energy production. Mitochondria even play an important role in apoptosis, or programmed cell death. This is achieved by disruption of electron transport, oxidative phosphorylation, and ATP production or even the release of proteins that trigger activation of caspase family proteases and alteration of cellular reduction-oxidation (redox) potential (Reed and Green, 1998). Succinate dehydrogenase (SDH) and malate dehydrogenase (MDH) are enzymes…

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The Reproduction of Prokaryotic Cells

Prokaryotic cells or prokaryotes are a type of cells that lack membrane-bound organelles such as a cell nucleus which differentiate them from their eukaryotic counterpart. According to the book Biology by Neil Campbell and Jane Reece, in addition, instead of a chromosomal DNA, the prokaryotes genetic information is found inside plasmids, which are basically characterized as circular loops. Moreover, prokaryotic cells have three shapes: rod, spherical and spiral. Unlike eukaryotes, prokaryotes divide or replicate through a simple process called binary…

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Damage and Repair Mechanisms of Cells and Tissues

Observation of the cells is something that modern biology has given an advantage of. Irritation of the cell can give critical information about the cell cycle, the damage on the DNA and its repair mechanism, and what will happen to the cell. In turn, since the cell is the basic unit of tissues, understanding cell damage can lead to understanding the fate of tissues composed of these same cells. Much damage to the cell can cause its death, and this…

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Eukaryotic and Prokaryotic Cells

1. Two similarities and two differences between eukaryotic cells and prokaryotic cells. There are a lot of similarities and differences between the two types of cells, the eukaryotic and prokaryotic cells. One of their most notable similarities is that both are enclosed within a structure called a plasma membrane. The plasma membranes of both eukaryotic and prokaryotic cells contain a fluid called a cytoplasm and tiny structures called ribosomes. Moreover, the two cell types also have DNA which basically contains…

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