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There is genetic diversity within the population. Random mutation can occur, forming new alleles of a gene. Though many mutations are harmful, in certain environments the new allele may benefit its posses...

The hydrolysis of ATP provides the energy necessary to break the cross-bridges formed between actin and myosin heads. The hydrolysis of ATP is also used to provide the energy for the power stroke, which i...

ATP is short for adenosine triphosphate, and it can be thought of as the energy 'currency' in our cells. It has a similar structure to that of an RNA nucleotide, as it is comprised of a nitrogenous base (...

Understanding concepts in exams is only part of the battle. To improve your marks you need to improve your exam technique!

For example: Have you correctly interpreted what the question is asking of...

Mitochondria are one of the three eukaryotic organelles that have a double membrane (along with chloroplasts and the nucleus), two of which are believed to have evolved from bacteria (mitochondria from Pr...