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Q. Term plasmalemma was given by

UP CPMTUP CPMT 2010Cell : The Unit of Life

Solution:

The term plasma membrane was originally used by Nageli and Cramer $(1855)$ for the membranous covering of the protoplast. The same was named plasmalemma by Plowe $(1931)$. Plasmalemma or plasma membrane was discovered by Schwann $(1838)$. Membranes also occur inside the cytoplasm of eukaryotic cells as covering of several cell organelles like nucleus, mitochondria, plastids, lysosomes, Golgi bodies, peroxisomes, etc.