1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Carbohydrates, the most abundant biomolescule on earth, are produced by
A
some bacteria, algae and green plant cells
B
fungi, algae and green plant cells
C
all bacteria, fungi and algae
D
viruses, fungi and bacteria.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
A
base-sugar-phosphate
B
base-sugar-OH
C
(base-sugar-phosphate)
D
sugar-phosphate
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The catalytic efficiency of two different enzymes can be compared by the
A
formation of the product
B
pH of optimum value
C
Km value
D
molecular size of the enzyme.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
A
effective pumping of CO2 into bundle sheath cells
B
RuBisCo in C4 plants has higher affinity for CO2
C
four carbon acids are the primary intial CO2 fixation products
D
the primary fixation of CO2 is mediated via PEP carboxylase.