Q263) Read the following four statements:
(i) The absorbed substances finally reach the tissues which utilise them for their activities.
(ii) Fatty acids and glycerol are first incorporated into small droplets called micelle which move into intestinal mucosa.
(iii) Active transport occur along concentration gradient hence requires energy.
(iv) In human, saliva is mainly produced by three pairs of salivary glands.
How many of the above statements are wrong:
statement (iii) is not correct as
In cellular biology, active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.