base level of cells, and those of an animal.
Within all organisms we find cells, they form the life blood of their being. Cells contain the blue prints for all life forms known as D.N.A.
While complex, cellular structures can also be relatively simplistic in design. Each component of the cell plays a vital role, working together in harmony to provide life.
Initially we must look at the cell membrane. The cell membrane is made up of a maliable ‘skin’ perforated by pores. The structure of the membrane is key to the cells work, allowing it to move freely and split. While this is the case for animal cells, within a plant we find that the cell membrane, rather than flexible, becomes a rigid structure known as the cell wall, this is because a plant cell requires rigidity to function. The cell membrane is made up of a phospholipid bilayer containing a hydrophilic region (polar phosphate ‘head’) and a hydrophobic region ( non-polarized fatty acid tail) which allows the exchange of materials too and from the cell. Within this phospholipid bilayer there are also other components which aid the transfer of materials too and from the cell by way of…
Cell culture & cell counting:
Introduction: Cell culture is the method of removal of cells from their respective animal or plant source, followed by their growth in a favourable artificial environment. These cells can be removed directly from tissues or fragmented using enzymatic or mechanical method. These cells can be obtained from the already established cell line or cell strain.
Short protocol:In this protocol, initially cells were washed to remove adherent cells, incubated and…
INTRODUCTION TO THE CELL
The cell is defined as the smallest unit of life. It is originated from a Latin word cella meaning ‘small room’ a word used by Hooke (in the year 1665 while observing a cell with the microscope he built by himself) to describe the cells. The cell is considered as a living thing because it has the ability to metabolize, grow and reproduce. Before the invention of microscope, it was difficult to talk about cells as they were tiny and so not visible with the naked eyes but…
What are cells, and why is it important to study them?
Cells are the smallest form of life. These cells make up all of the structural and functional parts of an organism. Cells perform jobs and produce sweat, saliva, enzymes, hormones, and antibodies. It is important to study cells because every biological problem can be solved by studying the cell, since all living things either is or was a cell at some point.
2. List five different organelles and describe what they do.
Nucleus- The nucleus…
In cell theory, it is known that all cells arise from pre-existing living cells, through cell division. In cell division, this involves the supplying of identical genetic material from the parent cell, DNA and protein, to two daughter cells. It results in the daughter cells having the same number of chromosomes as the parent cell. We need cell division as it is used in reproduction of new species, growth and repair of damaged cells and tissues, and to reduce the cell size. Larger cells are…
In this experiment we definitely observed the migration of cells in all three cells. Cell migration is the movement of cell from one area to another, in response to a chemical signal. The chemical signal is the central to achieving functions; cell differentiation, wound repair, embryotic development and the metastasis of tumors. There is an attraction between the cell and the outer membrane in order for the movement to occur. When participating in the experiment, the…
Animal and Plant Cells
Scientists have developed classification units among livings. One of this classification types is kingdoms. It represents widely covered societies, including Animalia and Plantae. It is known that all livings are composed of cells, from the cell theory, so animals and plants also have a cell association. The cellular structures of animal and plants cells are clearly different. These structural differences will be rediscovered through this experiment. It is…
The Cell Membrane is one of the most important
parts of the cell. If not for the cell membrane it
would be extremely easy for things to invade the
cell; this is because on of the cell membranes job
is to control what come in and out of the cell (i.e.
ions, viruses, etc). Also the cell membrane is
what helps hold the cell and all of its organelles
Endoplasmic Reticulum (AKA the ER), smooth and
rough whats the difference? The smooth ER does not
have any ribosomes while the rough ER is covered in…
The Eukaryotic Cell
The Discovery of the Cell
Cells are the smallest, and yet, most fundamental units of life. Scientists estimate the human body is composed of relatively one hundred trillion cells; ranging from our unique erythrocytes to our complex neurons. All these cells work in unison to produce a healthy, intellectual human being capable of contemplating the vastness of interstellar space, and even the complexity of themselves. In 1665, British scientist Robert Hooke, best known for his…
Which surface area-to-volume ratio gave the fastest diffusion rate?
-The surface area-to-volume ration that gave the fasted diffusion rate was 1.5 : .125 (0.5cm potato cube.)
2. Which surface area-to-volume ratio had the greatest diffusion depth?
-The surface area-to-volume ration that had the greatest diffusion depth was 1.5 : .125 (0.5cm potato cube.)
3. How might a cell’s shape influence the rate of diffusion?
- As a cell gets larger, the ratio of surface area to volume decreases.…