Question

The term plasmalemma was coined by
a.Nageli and Cramer
b.Plowe
c.Metchnikoff
d.Lewis

Answer 1

A plasmalemma is a thin membrane which is composed of lipids and protein and it surrounds the cytoplasm of the cell. It also controls the transfer of materials from in and out of the cell. It gives protection to the cell and maintains the fixed environment inside the cell.

Complete answer:
Let's discuss the above options and find the correct answer:
-Nageli and Cramer: The study of the cell membrane was described by Nageli and Cramer. The term cell membrane was coined by Nageli and Cramer in the year 1855.
-Plowe: Janet Plowe was a well-known botanist who helped in the discovery of the cell membrane. She also discovered the elasticity and composition of various cell organelle. She coined the term plasmalemma in 1931.
-Metchnikoff: Metchnikoff was a famous Russian zoologist and was well known for his work on immunology. He was also known as the discoverer of phagocytes in the year 1882.
-Lewis: Lewis Wolpert is a biologist who is known for his work on the intracellular positional information that guides cellular development.
Hence, the correct answer is Plowe.

Note: A plasma membrane which bounds a cell especially one next to the cell wall of the plant. A phospholipid is a lipid which is composed of the fatty acid tail and a phosphate linked head group.