Vital functions

Nutrition is the set of ____________________ through which the cells of living organisms acquire the ____________________ they need to ____________________ new cell material and obtain ____________________ .

Step 1 : Obtaining ____________________

Nutrients are ____________________ and ____________________ substances taken in by living organisms and used by their ____________________ . Organisms can have ____________________ nutrition if they make ____________________ nutrients trough ____________________ using ____________________ fron the ____________________ and ____________________ mooecules , such as ____________________ ____________________ and ____________________ . Organisms can have ____________________ nutrition if they obtain nutrients from the surrounding ____________________ by ____________________ on other ____________________ ____________________ and ____________________

Step 2 : Respiration

It is a ____________________ process that takes place inside the cell , in the ____________________ , in which cells use ____________________ and ____________________ to obtain ____________________ and produce carbon dioxide as ____________________ .

Step 3 : Distributing substances

Unicellular organisms exchange substances ____________________ with the environment through the ____________________ ____________________ . ____________________ organisms have a lot of cells that are ____________________ in ____________________ contact with the ____________________ environment , so they have ____________________ body parts that take in or expel substances and transport substances to the cells

Step 4 : Excretion
Process by which the ____________________ generated by ____________________ is ____________________ from the organis m