The below given part
belongs to human excretory
system. What is the process
that occurs here? *
A) Re absorption of water
B) Excretion
C) Urine Purification
D) Ultra filtration
Answers
Answer:
(a) Water reabsorption is by osmosis through water channels in the membrane.
(b)Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell.
(c)The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion. These processes ensure that only waste and excess water are removed from the body.
(d)Ultrafiltration (UF) is a variety of membrane filtration in which hydrostatic pressure forces a liquid against a semi permeable membrane. Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane.