Archives: Questions and Answers

Which of the following is/are true about Retrovirus? (A) It contains double-stranded RNA genome (B) It can cause cancer (C) It contains reverse transcriptase (D) It contains double-stranded DNA genome

Which of the following is/are trace element(s)? (A) Mn (B) P (C) S (D) Zn

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