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...determine that it is indeed formed by life, i.e. that it is biotic, and was not formed by other natural processes that might operate in the environment, i.e., is abiotic. It is therefore critically important that we do not inadvertently carry organisms or substances that might give us a false positive result (i.e. that suggest life is present, but it is in fact from...

...determine the various stresses or strains acting at all points in the body, in all directions, for all conditions of loading and use, and for the actual characteristics and properties of the materials of construction. For all but the most simple of shapes and conditions, this task is humanly impossible, hence the need for setting up simulations and modelling the...

...determines cell shape, while protists are diverse in this respect; some, such as amoebae, do not have a rigid cell wall, but many do. All cells, however, have a cell membrane, which acts as a barrier and an interface with the external environment. The cell membrane is composed predominantly of phospholipids, arranged in a bilayer. A schematic diagram illustrating the main...

...determine the nature of stationary points and ends by looking at rates of change, including the real-life situation, using differentiation to find acceleration...This free course is an introduction to differentiation. Section 1 looks at gradients of graphs and introduces differentiation from first principles. Section 2 looks at finding derivatives of simple functions....

...determine whether two given surfaces are homeomorphic. This OpenLearn course provides a sample of Level 3 study in Mathematics...Surfaces: Learning outcomes - After studying this course, you should be able to: explain the terms surface, surface in space, disc-like neighbourhood and half-disc-like neighbourhood explain the terms n-fold torus, torus with n holes, Möbius...