*Fill in the blank* The biological molecule usually makes up enzymes. Enzymes are used to the rate of a reaction within an organism. Each enzyme has a special shape called an where a binds to break down into different products.

The enzyme can keep breaking down millions of substrates because it is If an enzyme’s environment changes, it will not work effectively because the of the active site changes. This change is called .

Words : site, | up | substrate | protein | denaturation | shape | reusable. | speed | active

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Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.