Biochemistry
Q1/A/ Choose the correct
answer
( 12 Mark)
1-Glucose-6-phosphatase is absent or deficient in:
(A) Von Gierke’s disease
(B) Pompe’s disease
(C) Cori’s disease
)D)
McArdle’s disease
2- Glycogenin is
)A)
Uncoupler of oxidative phosphorylation
)B)
Polymer of glycogen molecules
)C)
Protein primer for glycogen synthesis
)D)
Intermediate in glycogen breakdown
3-The conversion of alanine to glucose is
termed:
)A)
Glycolysis
)B)
Oxidative decarboxylation
)C) Specific
dynamic action
)D)
Gluconeogenesis
4-Conversion of glucose to
glucose-6-phosphate in human liver is by
)A)
Hexokinase only
)B)
Glucokinase only
)C)
Hexokinase and glucokinase
)D)
Glucose-6-phosphate dehydrogenase
5-A fatty acid which is not synthesized in
the body and has to be supplied in the diet is
)A)
Palmitic acid (B) Lauric acid
)C)
Linolenic acid (D) Palmitoleic acid
6-Net energy generation on complete
oxidation of linoleic acid by old calculation is:
)A)
148 ATP equivalents
)B)
146 ATP equivalents
)C)
144 ATP equivalents
)D)
143 ATP equivalents
Q1/B/ Answer the following questions: ( 8 Marks)
1- Which pathway can provide the energy for the muscles in absence
of oxygen.
2- Mention the amino acid(s) that cannot be converted to glucose.
3- Give the effects of insulin on the
main carbohydrates pathways.
4- Mention the rate limiting step of
fatty acid breakdown
Q1/A/ Choose
the correct answer. (12 Mark)
1- The following compound has how many stereogenic
centers?
A) =
0
B)
= 1
C) =
2
D) =
3
2-Which of the following is (R)-3-hexanol?
3-Which of the following compounds is
cyclopentyldiethylamine?
4- What is the chief product from the following reaction?
5- Which of the following compounds is the strongest base?
A) (CH3)2NCH2CO2CH3
B)
(CH3)2NCOCH3
C) (CH3)2NC≡N
D) (CH3)2N-N=O
6- Which of the following may be classified as an acetal?
A) I & II
B)
III & IV
C)
Only IV
D) All but IV
Q/2/ B/ 1- The IUPAC name for (C2H5)2C=C(CH3)CH2CO2H
is ... ?
(8 Marks)
2- Give the two
examples of the nucleophilic
substitution reactions of carboxylic acid derivatives ?
3- Give the number of
isomers of 1,2-dibromocyclohexane ?
4- Give the 1HNMR spectra of p-Ethoxybenzaldehyde ?
Inorganic
Chemistry
Q5/A/ Choose the right answer (12 Mark)
1- The
maximum value of crystal field stabilization energy in the complex :
A) [Co(Cl)6]
B)K3[Co(CN)6]
C)K3[Co(Cl)6]
D)Cl2[Co(NH3)6]
2-It
is expected The magnetic susceptibility of the
complexes Na3 [Fe(CN)6]:
A) 2.8B.M.
B) 4.8B.M.
C) 1.9B.M.
D) 3.8B.M.
3- (Crystal Field
Theory) When the valence d orbitals of the central metal ion are split in
energy in an octahedral ligand field, which orbitals are raised least in
energy?
A) dxy
and dx2-y2
B) dxy,
dxz and dyz
C) dxz
and dyz
D) dxz,
dyz and dz2
4- which of the
complex is more stable :
A)[Co(NH3)6]2+
B) [Co(NH3)6]3+
,
C)[Co(en)3]2+,
D)[Co(en)3]3+,
5- which of the
following will not give test for chloride ions with silver nitrate at 25 0C
A)CoCl3.3NH3
B)CoCl3.4NH3
C)CoCl3.5NH3
D)CoCl3.6NH3
6- according to the
Orgel diagram the complex [Co(NH3)6]2+
exhibited the transitions :
A) 3A2g → 3T2g(F)←, 3A2g→3T1g(F) , 3A2g→3T1g(P)
B) 3A2g → 3T2g(F), 3A2g→3T1g(F) , 2A2g→2T1g(P)
C) 3A2g → 3T2g(p), 3A2g→3T1g(F) , 3A2g→3T1g(P)
D) none of these
Q5/B/ 1-For spin-orbit coupling to occur, following
three conditions must be satisfied by : (
8 Marks)
2- Comparism between Valence bond (VB) Theory,
Crystal Field Theory (CFT).
التاريخ: 20-01-2024 | الوقـت: 11:39:45 صباحا |
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