Cell Membrane Questions and Answers (Cytology MCQ-03): The cell membrane, also known as the plasma membrane, is a thin, flexible barrier that encloses the contents of a cell. It consists of a phospholipid bilayer with embedded proteins, allowing selective transport of substances and maintaining cell integrity. The cell membrane regulates […]
MCQ on Plasma Membrane (Part-1): The plasma membrane, also known as the cell membrane, is a thin, semi-permeable barrier that surrounds the cell, separating its internal contents from the external environment. It is composed of a phospholipid bilayer with embedded proteins and controls the movement of substances in and out […]
(1). In pET expression vectors, high level of expression of cloned gene is achieved using a. T7 promoter b. SP6 promoter c. Λ-PL promoter d. Trp promoter (2). Archaea is considered as a separate group from bacteria and eukaryotes, based on a. Genome sequence b. 16S rRNA gene sequence c. […]
Light vs Electron Microscope There are more animals living in the scum on the teeth in a man’s mouth than there are men in a whole kingdom. Antony van Leeuwenhoek A microscope is an instrument used to see objects which are not directly visible to naked eyes. The word microscope […]
(1). What is the molecular weight of water? a. 10 g/mol b. 15 g/mol c. 18 g/mol d. 20 g/mol (2). What is the H+ ion concentration in pure water? a. 1 X 10-7 m […]