NEET Test Series from KOTA - 10 Papers In MS WORD
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CHEMISTRY(KCET)
285647
A nucleic acid, whether DNA or RNA gives on complete hydrolysis, two purine bases, two pyrimidine bases, a pentose sugar and phosphoric acid.Nucleotides which are intermediate products in the hydrolysis contain
1 purine or pyrimidine base and ortho-phosphoric acid
2 purine or pyrimidine base, a pentose sugar and ortho-phosphoric acid
3 purine or pyrimidine base and pentose sugar
4 a purine base, pentose sugar and orthophosphoric acid.
Explanation:
(b) A molecule of nucleotide consists of a nitrogen containing base, a phosphate group and a sugar.
Karnataka CET 2022
CHEMISTRY(KCET)
285648
RNA and DNA are chiralmolecules, their chirality is due to the presence of
1 D-sugar component
2 \(L\)-sugar component
3 chiral bases
4 chiral phosphate ester unit.
Explanation:
(a) RNA and DNA molecules have ribose and deoxyribose sugar respectively. Both are chiral and their chirality is due to \(D\)-ribose or \(D\)-2-deoxyribose sugar component.
In DNA molecule, the sugar moiety is \(\beta-D\)-2-deoxyribose whereas in RNA molecule, it is \(\beta-D\)-ribose.
Karnataka CET 2021
CHEMISTRY(KCET)
285649
Primary structure in a nucleic acid contains bases as GATGC... Thechain which is complementary to this chain is
1 GG T GA...
2 T GAAG...
3 CTACG...
4 TT TAG...
Explanation:
(c) Complementary base pairs in DNA are\(A=\mathrm{T}\); \(G=\mathrm{C}\)
So, the chain which is complementary to GATGC chain is CTACG.
Karnataka CET 2021
CHEMISTRY(KCET)
285650
Hypothyroidismis caused by the deficiency of
1 adrenalin
2 thyroxine
3 glucocorticoid
4 vitamin B-12
Explanation:
(b) Increased level of thyroxine cause hyperthyroidism and low level of thyroxine cause hypothyroidism.
285647
A nucleic acid, whether DNA or RNA gives on complete hydrolysis, two purine bases, two pyrimidine bases, a pentose sugar and phosphoric acid.Nucleotides which are intermediate products in the hydrolysis contain
1 purine or pyrimidine base and ortho-phosphoric acid
2 purine or pyrimidine base, a pentose sugar and ortho-phosphoric acid
3 purine or pyrimidine base and pentose sugar
4 a purine base, pentose sugar and orthophosphoric acid.
Explanation:
(b) A molecule of nucleotide consists of a nitrogen containing base, a phosphate group and a sugar.
Karnataka CET 2022
CHEMISTRY(KCET)
285648
RNA and DNA are chiralmolecules, their chirality is due to the presence of
1 D-sugar component
2 \(L\)-sugar component
3 chiral bases
4 chiral phosphate ester unit.
Explanation:
(a) RNA and DNA molecules have ribose and deoxyribose sugar respectively. Both are chiral and their chirality is due to \(D\)-ribose or \(D\)-2-deoxyribose sugar component.
In DNA molecule, the sugar moiety is \(\beta-D\)-2-deoxyribose whereas in RNA molecule, it is \(\beta-D\)-ribose.
Karnataka CET 2021
CHEMISTRY(KCET)
285649
Primary structure in a nucleic acid contains bases as GATGC... Thechain which is complementary to this chain is
1 GG T GA...
2 T GAAG...
3 CTACG...
4 TT TAG...
Explanation:
(c) Complementary base pairs in DNA are\(A=\mathrm{T}\); \(G=\mathrm{C}\)
So, the chain which is complementary to GATGC chain is CTACG.
Karnataka CET 2021
CHEMISTRY(KCET)
285650
Hypothyroidismis caused by the deficiency of
1 adrenalin
2 thyroxine
3 glucocorticoid
4 vitamin B-12
Explanation:
(b) Increased level of thyroxine cause hyperthyroidism and low level of thyroxine cause hypothyroidism.
285647
A nucleic acid, whether DNA or RNA gives on complete hydrolysis, two purine bases, two pyrimidine bases, a pentose sugar and phosphoric acid.Nucleotides which are intermediate products in the hydrolysis contain
1 purine or pyrimidine base and ortho-phosphoric acid
2 purine or pyrimidine base, a pentose sugar and ortho-phosphoric acid
3 purine or pyrimidine base and pentose sugar
4 a purine base, pentose sugar and orthophosphoric acid.
Explanation:
(b) A molecule of nucleotide consists of a nitrogen containing base, a phosphate group and a sugar.
Karnataka CET 2022
CHEMISTRY(KCET)
285648
RNA and DNA are chiralmolecules, their chirality is due to the presence of
1 D-sugar component
2 \(L\)-sugar component
3 chiral bases
4 chiral phosphate ester unit.
Explanation:
(a) RNA and DNA molecules have ribose and deoxyribose sugar respectively. Both are chiral and their chirality is due to \(D\)-ribose or \(D\)-2-deoxyribose sugar component.
In DNA molecule, the sugar moiety is \(\beta-D\)-2-deoxyribose whereas in RNA molecule, it is \(\beta-D\)-ribose.
Karnataka CET 2021
CHEMISTRY(KCET)
285649
Primary structure in a nucleic acid contains bases as GATGC... Thechain which is complementary to this chain is
1 GG T GA...
2 T GAAG...
3 CTACG...
4 TT TAG...
Explanation:
(c) Complementary base pairs in DNA are\(A=\mathrm{T}\); \(G=\mathrm{C}\)
So, the chain which is complementary to GATGC chain is CTACG.
Karnataka CET 2021
CHEMISTRY(KCET)
285650
Hypothyroidismis caused by the deficiency of
1 adrenalin
2 thyroxine
3 glucocorticoid
4 vitamin B-12
Explanation:
(b) Increased level of thyroxine cause hyperthyroidism and low level of thyroxine cause hypothyroidism.
285647
A nucleic acid, whether DNA or RNA gives on complete hydrolysis, two purine bases, two pyrimidine bases, a pentose sugar and phosphoric acid.Nucleotides which are intermediate products in the hydrolysis contain
1 purine or pyrimidine base and ortho-phosphoric acid
2 purine or pyrimidine base, a pentose sugar and ortho-phosphoric acid
3 purine or pyrimidine base and pentose sugar
4 a purine base, pentose sugar and orthophosphoric acid.
Explanation:
(b) A molecule of nucleotide consists of a nitrogen containing base, a phosphate group and a sugar.
Karnataka CET 2022
CHEMISTRY(KCET)
285648
RNA and DNA are chiralmolecules, their chirality is due to the presence of
1 D-sugar component
2 \(L\)-sugar component
3 chiral bases
4 chiral phosphate ester unit.
Explanation:
(a) RNA and DNA molecules have ribose and deoxyribose sugar respectively. Both are chiral and their chirality is due to \(D\)-ribose or \(D\)-2-deoxyribose sugar component.
In DNA molecule, the sugar moiety is \(\beta-D\)-2-deoxyribose whereas in RNA molecule, it is \(\beta-D\)-ribose.
Karnataka CET 2021
CHEMISTRY(KCET)
285649
Primary structure in a nucleic acid contains bases as GATGC... Thechain which is complementary to this chain is
1 GG T GA...
2 T GAAG...
3 CTACG...
4 TT TAG...
Explanation:
(c) Complementary base pairs in DNA are\(A=\mathrm{T}\); \(G=\mathrm{C}\)
So, the chain which is complementary to GATGC chain is CTACG.
Karnataka CET 2021
CHEMISTRY(KCET)
285650
Hypothyroidismis caused by the deficiency of
1 adrenalin
2 thyroxine
3 glucocorticoid
4 vitamin B-12
Explanation:
(b) Increased level of thyroxine cause hyperthyroidism and low level of thyroxine cause hypothyroidism.