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1.
In prokaryotic cell,
I. enveloped genetic material is present
II. ribosomes are absent
III. an organised nucleus is absent
The correct option is
I. enveloped genetic material is present
II. ribosomes are absent
III. an organised nucleus is absent
The correct option is
2.
In a DNA molecule, distance between two based is
3.
Antiparallel strands of a DNA molecule means that
4.
Arrange the following steps in a correct sequence as per Gram's staining technique
I. Treatment with 0.5% iodine solution
II. Washing with water
III. Treatment with absolute alcohol/acetone
IV. Staining with weak alkaline solution of crystal violet
The correct sequence is
I. Treatment with 0.5% iodine solution
II. Washing with water
III. Treatment with absolute alcohol/acetone
IV. Staining with weak alkaline solution of crystal violet
The correct sequence is
5.
In eukaryotes, basic structural unit made up of histone and DNA is
6.
Choose the correct statement from the codes given below
I. Separation from extracellular medium allows the cells to maintain its chemical pool, orderliness of structure and reactions in contrast to disorderly distribution and randomly interacting molecules in the extra-cellular medium
II. Cells are unable to recognise one another due to the present of specific chemicals on their surface
III. Cells of plant tissues are often connected with one another through cytoplasmic bridges called plasmodesmata
IV. Different cells of an organism communicate as well as exchange materials with one another
I. Separation from extracellular medium allows the cells to maintain its chemical pool, orderliness of structure and reactions in contrast to disorderly distribution and randomly interacting molecules in the extra-cellular medium
II. Cells are unable to recognise one another due to the present of specific chemicals on their surface
III. Cells of plant tissues are often connected with one another through cytoplasmic bridges called plasmodesmata
IV. Different cells of an organism communicate as well as exchange materials with one another
7.
DNA multiplication is called
8.
Ribosomes are found in
9.
In protoplasm, fat store in the form of
10.
Spindles are formed by