Animal cell essay

Both plant and animals posses eucaryotic cells.

Animal cell essay

Both plant and animals posses eucaryotic cells. A plant cell is characterised by a cell wall, central vacuole, plastids and anastral spindle centrioles are generally absent.

Golgi apparatus consists of separate units called dictyosomes. Glyoxysomes and crystals may occur. Animal cells are bathed by tissue fluid. They are covered by cell membranes only. Spindle is amphiastral centrioles present.

Due to absence of wall, animal cells will burst if placed in hypotonic solution, Glyoxysomes and crystal are absent. A typical plant cell consists of cell wall and protoplast.

Cell wall is absent in animal cells. Protoplast Hanstein, is made of a plasmalemma, cytoplasm, nucleus and vacuoles. It is the outer rigid protective covering of plant cells and some procaryotes.

Cell wall has a matrix of hemicellulose, pectin, glycoprotein and water in which are embedded microfibrils. Microfibrils are made up of cellulose in plant cells, chitin or fungus cellulose in fungi and peptidoglycan mucopeptide in bacteria. Plant cell wall may have lignin for strength e.

The cell wall gives a definite shape and provides protection to the protoplasm. It is nonliving in nature and is permeable.

Adjacent cells in the plant body remain interconnected by plasmodesmata. A cell wall may have upto three parts-middle lamella, primary wall, secondary wall. It is the outermost region which functions as a cementing layer between two cells. It is absent on the outer free surface.

It ruptures to create intercellular spaces. It is formed of calcium and magnesium pectate. Pectic acid is long polygalacturonic acid compound in which a-D-galacturonic acid units are joined together by glycosidic linkages in 1: It is hydrophilic in nature.

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Essay about Comparing Animal Cells to Plant Cells Words | 3 Pages. Comparing Cells Task: Write a comparison of animal and plant cells While plant and animal cells appear to be different, they have some similar features.

Both kinds of cells contain a nucleus – which can also be known as the “brains” or the “control centre” of the cell. - Is your name on the front of the project? - Is the cell type identified?

Tell if it is a plant or animal cell. - Is the model a 3-D representation of a plant cell or animal cell? - Are all the organelles included?

(10 for plant cells, 9 for animal cells) - Are the organelles correctly labeled? Animal Nerve Cells Nervous coordination enables an organism’s rapid response to an external or internal stimulus.

Animal cell essay

Characteristic of animals only, nervous . Cell Structure Essay Sample. Objectives: 1. Prepare specimens for staining.

2. Identify unique and standard structures of the microscopic world. 3.

Short essay on Plant and Animal Cells