1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In alcohol fermentation
A
triose phosphate is the electron donar while acetaldehyde is the electron acceptor
B
triose phosphate is the electron donar while pyruvic acid is the electron acceptor
C
there is no electron donar
D
oxygen is the electron acceptor.
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In which one of the following do the two names refer to one and same thing?
A
Krebs' cycle and Calvin cycle
B
Tricarboxylic acid cycle and citric acid cycle
C
Citric acid cycle and Calvin cycle
D
Tricarboxylic acid cycle and urea cycle
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone
A
auxin
B
cytokinin
C
ethylene
D
abscisic acid.
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Nicotiana sylvestris flowers only during long days and N.tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N.sylvestris and N.tabacum to be separate species?
A
They cannot interbreed in nature
B
They are reproductively distinct
C
They are physiologically distinct
D
They are morphologically distinct
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