List of practice Questions

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:
Ategmic, Unitegmic, and Bitegmic ovules are present serially in:
In one helix of DNA, minimum and maximum number of hydrogen bonds present between nitrogen bases:

. If a random variable X has the following probability distribution, then the mean of X is:

X = xiP(X = xi)
12k²
2k
3k²

 

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 \( x = 0 \).
If \( y (\cos x)^{\sin x} = (\sin x)^{\sin x} \), then the value of \( \frac{dy}{dx} \) at \( x = \frac{\pi}{4} \) is:
The system of equations \( x + 3y + 7 = 0 \), \( 3x + 10y - 3z + 18 = 0 \), and \( 3y - 9z + 2 = 0 \) has:
If \( \mathbf{a} = 2\overline{i} - \overline{j}, \overline{b} = 2\overline{j} - \overline{k}, \overline{c} = 2\overline{k} - \overline{i} \) are three vectors and \( \overline{d} \) is a unit vector perpendicular to \( \overline{c} \), If \( \overline{a}, \overline{b}, \overline{d} \) are coplanar vectors, then \( |\overline{d} \cdot \overline{b}| = \):
If two dice are thrown, then the probability of getting co-prime numbers on the dice is: