Due in 2 hours , best answer gets ! you have to be able to suggest the job of an unknown cell based on it's structure. in order to facilitate this you need to revise ks3 learning on cell structure. find an electron-micrograph of the following cells. explain how their structure their function: red blood cell; muscle cell; neurone; palisade cell; root hair cell.

Its biconcave shape maximizes the surface to increase the efficiency of oxygen absorption. Its shape also allows it to "pinch" through the capillaries around the body. Red blood cells do not have a nucleus, which increases the oxygen capacity. sorry it took so long for an answer hope you get a good grade!

the fossil record provides evidence of a common ancestor to many species.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: