Unicellular organisms are capable of (i) ______ and (ii) performing the essential functions of life.
2 of 15
cell is the fundamental structural and ______ unit of all living organisms.
3 of 15
______ first saw and described a live cell. Robert Brown later discovered the nucleus
4 of 15
he invention of the microscope and its improvement leading to the ______ revealed all the structural details of the cell.
5 of 15
In 1838, ______, a German botanist, examined a large number of plants and observed that all plants are composed of different kinds of cells which form the tissues of the plan
6 of 15
______ (1839), a British Zoologist, studied different types of animal cells and reported that cells had a thin outer layer which is today known as the ‘plasma membrane’.
7 of 15
based on Schwann's studies on plant tissues, that the presence of ______ is a unique character of the plant cells.
8 of 15
______ proposed the hypothesis that the bodies of animals and plants are composed of cells and products of cells.
9 of 15
______ and Schwann together formulated the cell theory. This theory however, did not explain as to how new cells were formed
10 of 15
Rudolf Virchow (1855) first explained that cells divided and new cells are formed from pre-existing cells ( ______ )
11 of 15
Cell theory as understood today is: (i) all living organisms are composed of cells and products of cells. (ii) ______
12 of 15
The ______ is the main arena of cellular activities in both the plant and animal cells.
13 of 15
Various chemical reactions occur in it to keep the cell in the ______ .
14 of 15
Besides the nucleus, the eukaryotic cells have other membrane bound distinct structures called organelles like the endoplasmic reticulum (ER), the golgi complex, lysosomes, mitochondria, microbodies and vacuoles. The ______ ' ______ lack such membrane bound organelles.
15 of 15
______ are non-membrane bound organelles found in all cells – both eukaryotic as well as prokaryotic.
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