NEET Botany MCQs

Choose the correct statements

I. Passive cells are larger in size

II. Larger cells have lower surface volume ratio

III. To remain active, larger cells are either cylindrical in shape or possess several extensions of the cell membrane, like microvilli

IV. Microvilli are found in all those cells, which are active in absorption

V. Microvilli (membrane infoldings) occurs in transfer cells found in plants in the region of absorption or secretion of nutrients

Option containing all correct statements is

Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

I. It is the extension of plasma membrane into the cytoplasm

II. It helps in cell wall formation, DNA replication, respiration, secretion processes, increases the surface area of plasma membrane and enzymatic contents. It also helps in cytokinesis

III. It I the characteristic of bacterial cells

The above features are attributed to bacteria

Cell membrane controls

The thickness of unit membrane is

Cell adhesion and cell recognition occur due to biochemicals of cell membrane named

Plant and animal cells, both have

Most of the bacterial cell envelope consists of

Cell membrane is made up of