ultrasound (Science: investigation) A type of imaging technique which uses high-frequency sound waves. This is highly operator-dependent and is thought to be useful in diagnosis but not particularly accurate in the assessment of tumour response. For the latter, CT or MR imaging are more accurate...
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..
Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..
