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Muscle fibers are comprised of elongated myofibrils. A myofibril is made of repeating chains of sarcomeres which have no nucleus but have myosin and actin filaments which are able to slide past each other...

Body temperature must be maintained around 37°C as the enzymes in our body work best at this temperature. The thermoregulatory centre in the brain contains receptors that detect the temperature of blood, ...

When binding two things together in biology, such as an enzyme and a substrate, in order to fit together they musth ave a specific shape. The shape of the enzyme active site must be the reciprocal to the ...

C6H12O6 + 6O2 -----6CO₂ + 6H₂O

if you are looking at a far away object, your eyes don’t need to refract the light too much in order to focus it onto the retina. So in this case the lens shape should be flat instead of fat. And how this...