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1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at-
A
$$C_5^{'}$$ and $$C_2^{'}$$ respectively of the sugar molecule
B
$$C_2^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule
C
$$C_1^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule
D
$$C_5^{'}$$ and $$C_1^{'}$$ respectively of the sugar molecule
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Identify the correct statements regarding enzymes
A
Enzymes are specific biological catalysts that can normally function at very high temperature (T ~ 1000 K)
B
Enzymes are specific biological catalysts that the posses well – defined active sites
C
Enzymes are specific biological catalysts that can not be poisoned
D
Enzymes are normally heterogeneous catalysts that are very specific in their action
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Which base is present in RNA but not in DNA?
A
Uracil
B
Thymine
C
Guanine
D
Cytosine
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Insulin production and its action in human body are responsible for the level of diabetes. This compound belongs to which of the following categories?
A
A co- enzyme
B
An antibiotic
C
An enzyme
D
A hormone
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