Macromolecules are large complex molecules present in colloidal state in intercellular fluid. They are formed by the condensation of low molecular weight micromolecules and hence are polymeric in nature.
Polysaccharides, proteins, and nucleic acids are common examples of macromolecules.
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
Briefly describe the structure of the following:
(a) Brain
(b) Eye
(c) Ear
What are the characteristics of prokaryotic cells?
What are the steps involved in formation of a root nodule?
Bile juice contains no digestive enzymes, yet it is important for digestion. Why?
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