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NEET Questions / Chemistry / Classification of Elements and Periodicity in Properties / Introduction
Protoplast is
Cell without tonoplast
Cell without cell wall
Cell without cell membrane
Cell without double membrane bound cell organelles
Protoplast is
Cell without tonoplast
Cell without cell wall
Cell without cell membrane
Cell without double membrane bound cell organelles
Which of the following statements are correct? I. Occurrence of different types of tissues, organs and organ system results in division of labour II. A new cell always develops by the division of a pre-existing cells III. Cells are totipotent IV. Cell is the smallest unit, capable of independent existence and performing the essential functions of life The correct option is
I, II and III
I, III and IV
II, III and IV
I, II, III and IV
Comparing small and large cells, which statement is correct?
Small cells have a small surface area per volume ratio
Exchange rate of nutrients is fast with large cells
Small cells have a large surface area per volume ratio
Exchange rate of nutrients is slow with small cells
A biomembrane consists of lipids, proteins carbohydrates and water. These lipid molecules are
entirely hydrophobic, repelled by water
amphipathic, with both hydrophobic and hydrophilic regions
entirely hydrophilic, attracted to water
composed primarily of carbohydrates
The figures of cork cells as seen by Robert Hooke were published in the book
Origin of Species
Genera Plantarum
Micrographia
Species Pantarum
Robert Hooke thought about the cells that
Something similar to veins and arteries of animals for conducting fluid.
Smallest structural unit
Smallest functional unit
Unit of heredity
Study of form, structure and composition of cells is called
Cell biology
Cytology
Cell theory
Cell chemistry