Biology Resources (page 5)

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AbstractZahra et al. lt;br>Coronavirus disease &(COVID-19) first presented in Wuhan, Hubei province, China in December 2019. Since then, it has rapidly spread across the world, and is...

1 Introduction Secondary school science education is ever-changing (Davies and McMahon, 2004). The ways in which ideas are presented and adapted to fit the national curriculum and thu...

Substances are transported passively down concentration gradients. Often, substances have to be moved from a low to a high concentration - against a concentration gradient.Active tran...

For an organism to work, substances should move into and out of cells. Three processes add to this development - diffusion, osmosis, and active transport.Osmosis is the diffusion of w...

For an organism to work, substances should move into and out of cells. Three cycles add to this development - diffusion, osmosis, and active transport. Particles (molecules and ion...

Stem Cells in humans Stem cells will be cells that have not gone through differentiation. A cell that has not yet become specific is called undifferentiated. An embryo creates from...

Chromosomes convey genetic data in a molecule called DNA. A sort of cell division called mitosis ensures that when a cell divides each new cell created has the same genetic data. DN...

Cell Differentiation and Specialisation At the point when cells express explicit qualities that describe a specific sort of cell, we say that a cell has become differentiated. When...

One of the topics which often features in A Level Biology question papers is that of enzymes. Why is that? Enzymes control various vital processes that take place in cells. A varie...