Diffusion is important because:
<span>a) the human cell can obtain nutrients and gases </span>
<span>b) excrete metabolic wastes </span>
<span>c) maintain a suitable pH and ionic concentration within the cell for enzyme activity. </span>
Answer:
A=Vacuole
B=chloroplasts
C= cell membrane
D= endoplasmic reticulum
E= nuclear envelope / or nucleus in general
F= The cell wall.
Answer: The human brain and other nerve tissues use mostly as fuel.
