BIS 2B Lecture Notes - Lecture 5: Olympic Weightlifting, Allometry
14 Apr 2018
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To graph things across large range of sizes : scientists use a log scale. The relative weakness of gravitational forces permit modes of growth impossible for large animals. Insects discard their external skeleton & secrete a new one( (cid:12690) . A large mammal without any supporting structures would collapse to a formless mass under the influence of gravitational forces during a molt( . Since gravitational forces are weaker for smaller organisms such as geckos and flies, they can climb smooth surfaces. The 2/3 rd law does a good job of describing lifts of gold medalist olympic weightlifters in the 1970-90s. Isometric scaling( ): all dimensions increase the same amount as the size of an organism changes. Allometric scaling((cid:12689) ): disproportionate( ) growth of a part or parts of an organism as the size of the organism changes. Metabolic rate( ): the amount of energy expended daily at rest.
