The number of electrons required to deposit 1 gm atom of aluminium (at. Wt. = 27) from a solution of aluminium chloride will be (where N is Avogadro number)
Anonymous Quiz
15%
IN
18%
2N
63%
3N
4%
4N
The electrolytic cells, one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cells will be
Anonymous Quiz
17%
3:1
23%
2:1
20%
1:1
40%
3:2
The bond formed between the amino group of one amino acid and carboxyl group of another amino acid is
Anonymous Quiz
66%
Peptide bond
20%
Glycosidic bond
12%
Ester bond
2%
di-sulphide
Which of the following is correct for the enzyme?
Anonymous Quiz
13%
They are higly reactive and nonspecific in nature
66%
They are highly specific and are not used up during reaction.
11%
They change themselves at the end of reaction.
9%
They are heat insensitive
Select the correct option having primary metabolites?
Anonymous Quiz
12%
Flavonoids, Amino acids, Nucleic acids
16%
Antibiotics, Essential oils, Alkaloids I
66%
Sugars, Nucleotides, Amino acids
6%
Rubber, Gums, Flavonoids
Who proposed the theory that "Cells arise only from the pre-existing cells"?
Anonymous Quiz
1%
Mohl
91%
Virchow
5%
Haeckel
2%
Brown
Difference between the prokaryotic and eukaryotic cells in having
Anonymous Quiz
23%
Cell wall
66%
Nuclear membrane
8%
Ribosome
3%
None of these
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Difference between the prokaryotic and eukaryotic cells in having
Anonymous Quiz
28%
Mycoplasma is the smallest cell
28%
Bacteria are 3 to 5 μm in size.
20%
The largest cell is the egg of an ostrich.
25%
Nerve cells are some of the smallest cells.
Active transport across biomembrane involves
Anonymous Quiz
22%
Production of ATP
67%
Requirement of energy
5%
Production of toxin
5%
Release of energy
The best material for study of structure of cell membrane is
Anonymous Quiz
56%
RBC of human
13%
RBC of frog
28%
cheek cell of human
3%
liver cell of rat
Which of the following will determine the shape of the cells and provides a strong structural support to prevent the bacterium from bursting or collapsing?
Anonymous Quiz
2%
Plasmids
80%
Cell wall
13%
Mesosome
5%
Cell membrane