Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
(also called selectively permeable membrane) a membrane which allows some substances to cross it, but not others.
the transfer of pollen from the anther to the stigma of the same plant (self-pollination) or of...
the blood vessel that carries blood from the liver to the inferior vena cava.
the growth of cities due to the influx of people from rural areas.
a mass of undifferentiated cells resulting from uncontrolled mitotic cell division in body...