Enzymes are proteins, and proteins are basically a large chain of amino acids (polymer). So imagine when the chain is clumped into a 3D thing (see picture), it is slightly elastic (since there are spaces) and can have a bit of movement for the substrate to fit in. However, the shape is specific as it will return back to its original position once the substrate has left. Just imagine a silicone cup, when you stretch it a bit to fit a slightly larger ball in, it expands a little. When u remove the ball, it returns to its original shape. Similarly, the enzyme active site will return to its original shape but can be slightly molded for a short while, and that is what the sentence meant. It’s quite hard to explain without an actual model/ video, so if you don’t understand you can comment below!
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Some plants have the ability to make the stamens mature first before the pistils to prevent itself from self-pollinating. ... If a situation as such would happen, there will be no pollen left in that flower to land on the stigma to start the fertilization of the plant.
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new technological advances
Explanation:
The carrying capacity indicates the maximum population of a particular species that a given area of habitat can support over a given period without destroying or depleting the resource base.
Carrying capacity can be affected by factors such as technological advances, trade and use of fossil fuels for energy . Changes in technology modify the carrying capacity of a population. An example is the use of irrigation and fertilisation in agriculture or shortening rotations between crops, which increases the number of people who can be fed from the resources of a given population due to increased yield.
Extinction is the term used when all members of a species dies and is never seen again
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