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Solution:
Dark
reaction was first of all established by Blackman that's why it is called
Blackman's reaction.
2.Correct Answer: C
3.Correct
Answer: A
Solution:
1, 3-diphasphoglyceric acid + 12 NADP.
2H
−→−−−−−−−−−−−−−−−−Triosephosphatedehdrogenase
3-phosphoglyceraldehyde
+12NADP++12H3PO4
4.Correct Answer: D
Solution:
Xylose, Ribulose, Ribose is pentose sugar that is why
they have 5 carbon atoms.
5.Correct
Answer: D
6.Correct
Answer: B
Solution:
Ribulose - 1, 5 biphosphate (RuBP) acts as
CO2
acceptor and 6 mols RuBP react with 6 mols of
CO2
and given rise to 3-phosphoglyceric acid, 3 PGA is a first
stable compound in
C3
cycle (a 3-carbon atom).
7.Correct
Answer: B
Solution:
Fructose-1, 6 biphosphate
−→−−−−−−PhosphataseH2O
Fructose-6. phosphate +
H3PO4
8.Correct
Answer: A
Solution:
Addition of carbon dioxide in to a compound is called
carboxylation. Carboxylation is a first reaction of dark reaction. 6
Ribulose-1, 5 biphosphate + 6 CO2 +6H2O
−→−−−−−−−−−−CarboxydimutataseRuBPcarboxylatase
3phospholglyceric(12mols) acid
1, 3 biphosphoglycoric acid +12 NADP.2H
−→−−−−−−−−−−−−−−−−−Triosephosphatedehydrogenase3 phosphoglyceraldehyde + 12NADP++ 12H3PO4.
9.Correct
Answer: D
Solution:
Phosphoglyceraldehyde is a product of dark reaction which
is formed by the 1, 3 biphosphoglyceric acid react with 12 mols of NADP, 2H
10.Correct Answer: A
11.Correct Answer: B
12.Correct
Answer: B
Solution:
Dark reaction is independent of light hence
it is called dark reaction. However, it depends upon the products of light
reaction of photosynthesis i.e., NADP.2H and ATP.
13.Correct
Answer: A
Solution:
Ribulose 1, 5 diphosphate carboxylose
enzyme is first enzyme of calvin cycle convert Ribulose-1, 5 diphosphates into
3 phosphoglyceric acid.
15.Correct
Answer: B
Solution:
During photosynthesis PGA is reduced by
NADP. 2H into phosphoglyceraldehyde
16.Correct Answer: B
17.Correct
Answer: A
Solution:
Calvin cycle occurs in the stroma of chloroplasts where
the products of light reaction (assimilatory power NADP.2H + ATP) are used to
form
CO2
to carbohydrate and it has enzymes essential for fixation
of
CO2
and synthesis of sugar.
18.Correct
Answer: B
Solution:
The new name of dark reaction is carbon assimilation, in
which
CO2
gas reacting with
H2O
(liquid) synthesizes solid glucose.
19.Correct Answer: B
20.Correct Answer: A
21.Correct Answer: B
22.Correct Answer: B
23.Correct Answer: B
Solution:
As calvin cycle takes only one carbon (as
CO2
) at, a time. So, it takes six turns of
the cycle to produce a net gain of one hexose or glucose.
24.Correct Answer: C
25.Correct
Answer: C
Solution:
Reductive carboxylation starts with a 5, carbon sugar
ribulose - 5 phosphate. 6 mol of this sugar react with 6 mol of ATP (produced
in light reaction) to form 6 mol of RuBP and 6 mol ADP Ribulose - 5
phosphate
−→−−−−−−−−−−Phosphopentokinase
Ribulose 1-5 biphosphate + 6ADP
26.Correct
Answer: B
27.Correct Answer: A
28.Correct Answer: A
29.Correct
Answer: C
Solution:
Ribulose 1, 5 diphosphate (also known as ribulose
biphosphate) a phosphorylated 5 carbon sugar (pentose sugar) it is first
attached with
CO2
in photosynthesis.
30.Correct Answer: A
31.Correct
Answer: B
Solution:
Calvin cycle is divided
into three distinct phases but carboxylation occur only one time.
32.Correct
Answer: B
Solution:
3−PhosphoglyceraldehydePGAL [ 4Molecules] −→−−−−−−−−TriosephosphateIsomerase
Dihydroxyacetonephosphate(DHAP) [ 4Molecules]
Dihydroxyacetonephosphate [ 2molecules] +3−phosphoglyceral2molecules
dehyde−→−−−−Aldolasefructose−1,6−diphosphate [ 2molecules]
33.Correct Answer: B
34.Correct Answer: D
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