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The circulatory system is described as being "dual", which means that blood passes through the heart twice for each complete circuit of the body, once to the lungs, and once to the rest o fthe b...

Other ways that substances can cross the plasma membrane include facilitated transport, where molecules or ions must interact with a channel/carrier protein to be transported across the membrane, down a c...

Initally, the rate of reaction is able to increase as concentration does because at this point, not all enzymes active sites are occupied. Therefore, by adding more substrate, a higher percentage of enzym...

Transcription factors together with enzymes such as DNA topoisomerase and DNA helicase reach the gene of interest. These enzymes uncoil the DNA and revelea the two strands of DNA that are wrapped around h...

ATP, which stands for adenosine triphosphate, is a biomolecule formed by a purine base (adenine), a sugar molecule (ribose) and three phosphate groups. Its main function is to store energy within the cell...