Which cell structure is found in plant cells, but not in animal cells?
(1) cell wall
(3) nucleus
(2) cell membrane
(4) cytoplasm
Cell Wall
One function of the human excretory system is
(1) making materials that the body cells need
(3) moving substances to and from body cells
(2) removing excess heat energy from the body
(3) moving substances to and from body cells
8 Which term is used to describe the sum of all the
chemical processes in the human body?
(3) metamorphosis
(4) metabolism
Metabolism
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