EVERYDAY SCIENCE

Detailed explanation-1: -Food that is absorbed by the system is transported to the different cells of the body by blood and lymph. All the nutrients except dietary fats absorbed by the system are carried by the blood while fat molecules are carried to the cells by the lymph. This process movement of nutrients is called assimilation.

Detailed explanation-2: -Cells ingest fluid, molecules, and particles by endocytosis, in which localized regions of the plasma membrane invaginate and pinch off to form endocytic vesicles.

Detailed explanation-3: -The process is called active transport. Active transport enables cells to absorb ions from very dilute solutions. Active transport allows cells to move substances from an area of low concentration to an area of high concentration.

Detailed explanation-4: -Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing it with th e cell membr ane. The membrane folds over the substance and it becomes completely enclosed by the membrane. At this point a membrane-bound sac, or vesicle, pinches off and moves the substance into the cytosol.