Given below are few processes which takes place in humans. Which is an example of assimilation?a.Absorption of glycerol into small intestine.b.Breakdown of alcohol in the liver.c.Building of proteins from amino acids.d.Release of a hormone from a gland.
Answers
Answer:Single-celled organisms can directly take in nutrients from their outside environment. Multicellular animals, with most of their cells removed from contact directly with the outside environment, have developed specialized structures for obtaining and breaking down their food. Animals depend on two processes: feeding and digestion.
Animals are heterotrophs, they must absorb nutrients or ingest food sources. Ingestive eaters, the majority of animals, use a mouth to ingest food. Absorptive feeders, such as tapeworms, live in a digestive system of another animal and absorb nutrients from that animal directly through their body wall. Filter feeders, such as oysters and mussels, collect small organisms and particles from the surrounding water. Substrate feeders, such as earthworms and termites, eat the material (dirt or wood) they burrow through. Fluid feeders, such as aphids, pierce the body of a plant or animal and withdraw fluids.Animals, for the most part, ingest their food as large, complex molecules that must be broken down into smaller molecules (monomers) that can then be distributed throughout the body of every cell. This vital function is accpomplished by a series of specialized organs that comprise the digestive system. Food for the most part consists of various organic macromolecules such as starch, proteins, and fats. These molecules are polymers made of individual monomer units (as discussed in an earlier chapter). Breaking these large molecules into smaller components involves:
movement: propels food through the digestive system
secretion: release of digestive juices in response to a specific stimulus
digestion: breakdown of food into molecular components small enough to cross the plasma membrane
absorption: passage of the molecules into the body's interior and their passage throughout the body
elimination: removal of undigested food and wastesFood for the most part consists of various organic macromolecules such as starch, proteins, and fats. These molecules are polymers made of individual monomer units (as discussed in an earlier chapter). Breaking these large molecules into smaller components involves:
movement: propels food through the digestive system
secretion: release of digestive juices in response to a specific stimulus
digestion: breakdown of food into molecular components small enough to cross the plasma membrane
absorption: passage of the molecules into the body's interior and their passage throughout the body
elimination: removal of undigested food and wastes
Explanation:
Answer:
A) absorption of glycerol into small intestine.
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