The cell nucleus
By: are-peace
A cell is the basic unit of life. In majority cells, there are certain components known as the organelles. One of the organelles is the nucleus. The nucleus acts as the control center of the cell because nucleus functions to control all the movements of...
Basic cytoskeleton proteins
By: Barnabas Stinson
Your body needs structure. Without it, we're just a puddle of skin and blood. For the human body, this structure is provided in part by the skeleton. But our cells, the fundamental units from which we're built, also require structure. Though we often think of...
Biosciences: Finland and South Africa partner on development
By: daneemax
Finland and South Africa have recently taken a step further in deepening relations between their countries with the launching of the BioFISA partnership program on bioscience research support early this year. The agreement was signed on the 10th of December 2008 by the Finnish Ambassador...
How photosynthesis works
By: Dana Moses
Photosynthesis is the biochemical process that uses carbon dioxide, water, and energy from sunlight to produce oxygen and sugar. Photosynthesis occurs in plants and some algae and is the ultimate source of all the food we eat. Plant leaves are the primary site of...
How photosynthesis works
By: C Song
The term 'photosynthesis' is taught simply to young children as something that happens in a plant when there is sunshine that makes energy. As children progress through their school years, you can see their intellectual progress just by asking, "What is photosynthesis?" Their answers...
Introduction to mitosis
By: Tami Port MS
You grew from a zygote, or fertilized egg, into an organism with trillions of specialized cells. Mitosis is the process that enabled you to grow and develop after the fateful meeting of egg and sperm that became "you". Cells must divide in order for an...
By: Tami Port MS
Enzymes are catalysts in living cells; proteins that speed up chemical reactions. Without enzymes, cellular reactions would occur at a much slower rate or not at all; making life impossible. * Enzyme Substrate Complex * The word catalyst is a general term for something that...
An overview of plant cell walls
By: Michael Gotama
The cell wall is the organelle that distinguishes the animal cell and plant cell, because those cell walls only locate at plant cell. Cell wall consist of cellulose embedded in a matrix of polysaccharides and proteins, it 10 - 100 times more thicker than plasma...
Understanding mitosis and meiosis
By: Michael Gotama
On multicellular eukaryotes there are two types of cell division, mitotic (consist of mitosis and cytokinesis) and meiosis, the major use of mitosis is for division at autonomous cell, meiosis is for division at reproduction cell. The differences between mitosis and meiosis are: a. Mitosis...
Osmosis and cell membranes
By: Michael Gotama
Osmosis can't be explained separate from membrane cell because osmosis is the diffusion of water across membrane. Although osmosis is kind of diffusion but there are a big differences between diffusion and osmosis. For a short diffusion is particle moving across the membrane from high...

 

1 13 14 15 16 17 33