A is a photo or digital image taken through a microscope to show a magnified image of a specimen.
Important Questions on Cell Structure
(i) large chromosome
(ii) small chromosome
(iii) Y chromosome
(iv) X chromosome
Consider the following statements, and select the option that correctly fills the blanks:
(i) The interphase nucleus has a loose and indistinct network of nucleoprotein fibers called A .
(ii) The structure which provides the shape of chromosomes is called _____B_____.
(iii) A part of chromosome beyond non-staining secondary constriction is called ____C____.
(iv) Kinetochores are ___D___ structure.
The number of X chromosomes in a human ovum is _____.
Read the following statements w.r.t. cell wall and select the correct option:
(a) A non-living rigid structure which forms an outer covering for the plasma membrane.
(b) It gives shape to the cell and protects the cell from mechanical damage and infection.
(c) It helps in cell-to-cell interaction.
(d) It provides a barrier to undesirable macromolecules.
The cell wall is:
A. A non-living, rigid structure that surrounds the plasma membrane of plant and animal cells.
B. Fungal cell wall is made up of chitin.
