List of practice Questions

Statement I: Acid rains are due to pollution of sulphur dioxide and nitrogen oxides. Statement II: Incinerators are used to dispose of electronic wastes.

Flagellum in Peranema is:

Auricularia is the larval form of:

Thermostable DNA polymerase (Taq Polymerase) enzyme is isolated from the following bacterium:

Study the following and pick the correct statements:

Maintenance of relatively constant internal conditions different from the surrounding environment is called:

Symmetry of sea anemone is:

In Morgan’s experiments on linkage in Drosophila, the percentage of white-eyed, miniature-winged recombinants in the F\(_2\) generation is:

Identify the correct definitions of the following molecular biology terms:
I. Splicing = Removal of introns
II. Capping = Addition of unusual methyl guanosine triphosphate added to 5" end of hn RNA
III. Tailing = Deletion of adenylate residues at 3'end of hn RNA
IV. Anticodon= Specifies termination of polynucleotide chain

Tetracycline resistance gene of pBR322 consists of this restriction site:

Assertion (A): In gel electrophoresis, DNA fragments get separated and move toward the anode. Reason (R): DNA fragments are positively charged molecules.

Assertion (A): Beggiatoa is not a chemoautotrophic bacterium. Reason (R): Chemoautotrophic bacteria derive carbon from CO\(_2\) and energy from oxidation of inorganic compounds.

Assertion (A): Disulphide bridges help in stabilization of protein structure. Reason (R): Sulphur forms disulphide bridges in the quaternary structure of proteins.

Per one Calvin cycle, the number of CO\(_2\) molecules fixed, ATP utilized, and the number of Glucose, NADPH molecules produced respectively are:

In C\(_4\) plants, the Oxaloacetic acid is formed by this reaction:

Identify the correct sentences regarding the role of physiological responses of phytohormones:
I. Ethylene initiates sprouting of potato tubers
II. Gibberellins promote senescence
III. Auxins promote flowering in pineapple
IV, Abscisic acid inhibits seed germination

Cell organelles included in the endomembrane system are:

Dehydration occurs during the formation of the following types of bonds:

The site of transcription and translation in eukaryotic cells are respectively:

Specialized epidermal cells surrounding the guard cells are:

Define \( f: \mathbb{R} \to \mathbb{R} \) by \[ f(x) = \begin{cases} \frac{1 - \cos 4x}{x^2}, & x < 0 \\ a, & x = 0 \\ \frac{\sqrt{x}}{\sqrt{16 + \sqrt{x}} - 4}, & x > 0 \end{cases} \] Find the value of \( a \) such that \( f \) is continuous at \( x = 0 \).