Which of the following entity(ies) is/are found inside the intact nucleus of eukaryotic cells?
(A) Centrosome
(B) Lysosome
(C) Nucleolus
(D) Nucleosome

Which of the following technique(s) can be used to determine the three-dimensional structure of an organic compound?
(A) Mass spectrometry
(B) NMR spectroscopy
(C) UV-visible spectroscopy
(D) X-ray crystallography

Which of the following statement(s) about the effect of genetic drift is/are correct?
(A) It can cause changes in the frequency of alleles at random
(B) It is a mechanism of evolution
(C) It can lead to loss of genetic variation within small populations
(D) It is significant in large populations

Which of the following is/are example(s) of a lotic ecosystem?
(A) Lake
(B) Pond
(C) River
(D) Stream

Which of the following method(s) is/are used to estimate protein concentration?
(A) Anthrone
(B) Biuret
(C) Bradford
(D) Lowry

Which of the following statement(s) about eukaryotic DNA topoisomerase is/are correct?
(A) Topoisomerase I creates transient single-strand breaks
(B) Topoisomerase I creates transient double-strand breaks
(C) Topoisomerase II creates transient single-strand breaks
(D) Topoisomerase II creates transient double-strand breaks

Which of the following statement(s) about Golden Rice is/are correct?
(A) Consumption of it increases vitamin A levels
(B) Consumption of it increases vitamin D levels
(C) Consumption of it increases vitamin K levels
(D) It is a transgenic crop containing β-carotene

Which of the following is/are lateral meristems?
(A) Cork cambium
(B) Procambium
(C) Protoderm
(D) Vascular cambium

Ionic character of the covalent bonds in the compounds Cl₂, HCl, NaCl, NaF follows the order
(A) Cl₂ > NaCl > HCl > NaF
(B) HCl > Cl₂ > NaF > NaCl
(C) HCl > NaCl > NaF > Cl₂
(D) NaF > NaCl > HCl > Cl₂

Chromosome duplication during the cell cycle occurs in
(A) G1 phase
(B) G2 phase
(C) M phase
(D) S phase