List of practice Questions

Macrophages that are resident in the liver are ________.
The circuit shown in the figure functions as which one of the following digital circuit blocks ?
Digital Circuit Block
What is the value of the following complex line integral counter-clockwise ?
\(\oint_{|z|=3}\frac{8}{z(z-2)(z-4)}dz\)
Which of the following statements is/are CORRECT with reference to rubber production from plants?
In Calvin-Benson cycle, to produce 1 molecule of glyceraldehyde 3-phosphate by fixing 3 molecules of carbon dioxide, 9 molecules of ATP and____ molecules (in integer) of NADPH are typically utilized.
In wild-type Arabidopsis thaliana, the four types of floral organs (sepal, petal, stamen, carpel) are arranged in concentric whorls from outside to inside. With reference to the ABC model of floral organ patterning, match the homeotic mutants in Group 1 with their respective arrangements of organs in the four whorls given in Group 2.
Group 1 Group 2
(P) A class mutants(i)sepal, sepal, carpel, carpel
(Q) B class mutants (ii) sepal, petal, petal, sepal 
(R) C class mutants(iii) carpel, stamen, stamen, carpel
 (iv) sepal, sepal, petal, petal
Match the inhibitors in Group 1 with their respective targets in Group 2.
Group 1 Group 2
P) Oligomycin(i) Cytochrome bc1 complex 
(Q) Antimycin A (ii) Photosystem II
(R) 3-(3,4-dichlorophenyl)-1, 1- dimethylurea (DCMU)(iii)K\(^+\) ionophore
(S) Valinomycin(iv) Fo ATP synthase
The spectrum of a protein obtained using electrospray ionization mass spectrometry (ESI-MS) is shown below. Two peaks, one at m/z = 2960.6 and the other at m/z = 3552.5, are marked. The mass of the protein associated with the m/z = 2960.6 peak is____ Da. (Round off to two decimal places)
The spectrum of a protein obtained using electrospray ionization mass spectrometry (ESI-MS)
Which one of the following plant families does apple (Malus domestica) belong to?
The collateral and open type of vascular bundle with endarch xylem strand is usually found in
Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?
Which of the following plant diseases is/are caused by nematode?
Which of the following selectable marker genes is/are used for herbicide tolerance during genetic transformation of plants?
Which one or more of the following statements is/are correct regarding the transport and retention of proteins in different cell organelles?
Which one or more of the following statements correctly describe(s) fluorescence spectroscopy?
Which one or more of the following statements correctly describe(s) the changes upon the addition of puromycin during eukaryotic translation?
Factor H, a complement regulatory protein in plasma, binds C3b and
A 5250 base-pair long plasmid with 10 negative supercoils would have a linking number of______,considering 10.5 base pairs per turn for B DNA. (Answer in integer)
Which one or more of the following statements correctly describe(s) the addition of N-nucleotides during the rearrangement of the immunoglobulin heavy chain- encoding gene?
A newly identified viral protein contains one long a-helix spanning 60 amino acid residues. The number of main chain H-bonds formed in this helix is____ (Answer in integer)
In a lactic acid solution at pH 4.8, the concentrations of lactic acid and lactate are 0.01 M and 0.087 M, respectively. The calculated pKa of lactic acid is____ (Round off to one decimal place)
If a 10 mM solution of a biomolecule in a cuvette with a path length of 10 mm absorbs 90% of the incident light at 280 nm, the molar extinction coefficient of the biomolecule at this wavelength is ____ M\(^{-1}\)cm\(^{-1}\). (Round off to two decimal places)
Which one of the following is the correct match between the molecular properties listed in Column I and the corresponding biochemical separation methods in Column II?I.
Column IColumn II 
P. Solubilityi. Reverse phase chromatography
Q. Ionic chargeii. Ultracentrifugation
R. Polarityiii. Salting out
S. Molecular size iv. Isoelectric focusing
  v. Gel electrophoresis
Which one or more of the following statements is/are correct regarding the electromotive force generated by electron transfer chain?
The paramagnetic species among the following is/are (Given: Atomic numbers of Cr = 24; Fe = 26; Ni = 28):