List of practice Questions

Overall Glycolysis yields some ATPs, but in early stages, ATP is utilised to phosphorylate sugar substrates. In which of the following steps is ATP consumed?

Which of the following structure cannot be taken by the single subunit protein?

The ”Biofilm” is a thin layer that constitutes:

Which of the following organelles contains DNA?

There are several instances where the DNA of the bacteriophage resides inside the bacterial cell without replication and virus generation. The process of co-existence of the bacterium and phage DNA is known as:

Match List I with List II:

LIST I	LIST II
A. Ligase	I. Reduce topological strain
B. Helicase	II. Adds phosphate group
C. Gyrase	III. Joins two open ends of DNA
D. Kinase	IV. Unwinds the DNA

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Hypothalamus is present in which part of the brain?

The correct sequence of classification of house mouse is:

Organogenesis in humans takes place during:

Which of the following codons are called nonsense codons?

What will be the unit of equilibrium constant for the following reaction?
CH₃COCH₃ + HCN ⇌ CH₃C(OH)(CN)CH₃

Which of the following metal is bioaccumulative in nature but does not undergo biomagnification to cause adverse health effects?

When ice starts melting from 0°C to 8.5°C, its density will:

Which of the following phosphate species does not exist in water?

Which of the following microbial species are helpful in the denitrification process?
Microbial species:
A. Rhizobium sp
B. Achromobacter
C. Pseudomonas
D. Nitrosomonas
E. Azotobacter
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Which of the following chemical species will dominantly exist in water having a pH of less than 5?

In which of the following pairs of chemical species does sulfur (S) not have the same oxidation number?

What will be the molar concentration of ammonium ion in a 100 ppb ammoniacal solution?

Arrange the following II B (or 12) group elements in the increasing order of their Pauling electronegativities:
Elements:
A. Zn
B. Hg
C. Cd
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Match List I with List II:

LIST I (Experiment)	LIST II (Conclusion)
A. Photoelectric effect	I. Ether medium does not exist
B. Michelson-Morley	II. Light is made up of photons
C. Stern-Gerlach	III. Quantization of electronic orbit
D. Franck-Hertz	IV. Electron spin moment

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Cooking pans made from which of the following metals would need less heat to achieve a certain cooking temperature?

Water that got trapped during the formation of sedimentary rock is referred to as:

Which of the following were the characteristics of the prebiotic primitive Earth?
Characteristics:

1. A. Presence of \( \text{CO}_2 \)
2. B. Presence of \( \text{CH}_4 \)
3. C. Presence of \( \text{H}_2\text{O} \) vapour
4. D. Presence of \( \text{O}_2 \)

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In the asthenosphere, the velocity of S-waves in partly molten rocks:
A. Increases
B. Decreases
C. Remain Constant
D. First increases then decreases
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