Digestion and AbsorptionEasy
Question
Carrier ions like Na+ facilitate the absorption of substance like
Options
A.amino acids and glucose
B.glucose and glycol
C.fatty and fatty acids
D.fructose and some amino acids
Solution
Active transport occurs with the help of energy, usually against concentration gradient. For this, cell membrane posseses carries abd gated channels. Active transport of one substance often accompanied by permeation of other substance. The phenomenon is called secondry active transport. It is of two main types - Co-transport (eg, glucose and some amino acid along with inward pushing of excess NA+ ) and counter transport (Ca2+ and H+ movement outwardly as excess Na+ passes inwardly).
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