GATE BT format:mcq PYQs & Answers — Page 37

Questions 361–370 of 389. Imported answers require independent review unless marked reviewed.

Topic practice 389 questionsPage 37 of 39

The transcription factor X binds a 10 base pair DNA stretch. In the DNA of an organism, X was found to bind at 20 distinct sites. An analysis of these 20 binding sites showed the following distribution:

Base	1	2	3	4	5	6	7	8	9	10
A	11	0	0	0	16	2	4	0	4	3
T	3	0	19	0	1	3	4	20	2	4
G	4	20	0	0	2	4	6	0	12	2
C	2	0	1	20	1	11	6	0	2	11

What is the consensus sequence for the binding site of X?

Your answerChoose one option.

NGTCNNTNNN

AGTCACNTGC

CACCTANCTG

ANNNACGNGC

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Which one of the following graphs represents the kinetics of protein precipitation by addition of ammonium sulphate? On the Y-axis, [Protein] represents the concentration of free protein in solution.

Your answerChoose one option.

Diagram for Biotechnology question 26 (figure 2)

Diagram for Biotechnology question 26 (figure 3)

Diagram for Biotechnology question 26 (figure 4)

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The distribution of marks scored by a large class in an exam can be represented as a normal distribution with mean μ and standard deviation σ. In a follow-up exam in the same class, everyone scored 5 marks more than their respective score in the earlier exam. For this follow-up exam, the distribution of marks can be represented as a normal distribution with mean μ₂ and standard deviation σ₂. Which one of the following is correct?

Your answerChoose one option.

μ = μ₂; σ > σ₂

μ < μ₂; σ > σ₂

μ > μ₂; σ < σ₂

μ < μ₂; σ = σ₂

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Match the proteins in Group I with cellular processes in Group II.

Group I: P. p53; Q. Lysozyme; R. Tubulins; S. Histones

Group II: 1. DNA packaging; 2. Apoptosis; 3. Hydrolysis of polysaccharides; 4. Chromosome segregation

Your answerChoose one option.

P-4, Q-2, R-3, S-1

P-2, Q-3, R-1, S-4

P-4, Q-3, R-1, S-2

P-2, Q-3, R-4, S-1

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The circular dichroism spectra of three proteins P, Q, and R are given below:

Choose the correct combination.

Your answerChoose one option.

P: α-helix, Q: β-sheet, and R: Random coil

P: β-sheet, Q: α-helix, and R: Random coil

P: α-helix, Q: Random coil, and R: β-sheet

P: Random coil, Q: α-helix, and R: β-sheet

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Match the organisms in Column I with the characteristics in Column II.

Column I	Column II
P. Methanococcus	1. Halophile
Q. Dunaliella	2. Acidophile
R. Sulfolobus	3. Mesophile
S. Escherichia	4. Barophile

Your answerChoose one option.

P-4, Q-3, R-2, S-1

P-3, Q-2, R-4, S-1

P-2, Q-1, R-4, S-3

P-4, Q-1, R-2, S-3

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Which one of the following amino acids has three ionizable groups?

Your answerChoose one option.

Glycine

Leucine

Valine

Lysine

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Which one of the following organisms is responsible for crown gall disease in plants?

Your answerChoose one option.

Xanthomonas campestris

Rhizobium etli

Agrobacterium tumefaciens

Erwinia stewartii

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Match the plant hormones in Column I with functions in Column II.

Column I: P. Gibberellic acid Q. Zeatin R. Ethylene S. Abscisic acid

Column II:

Seed and bud dormancy

Fruit ripening

Delaying leaf senescence

Regulation of plant height

Your answerChoose one option.

P-4, Q-3, R-2, S-1

P-4, Q-2, R-3, S-1

P-3, Q-1, R-2, S-4

P-2, Q-1, R-4, S-3

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An immunocompetent person becomes infected with a pathogenic strain of bacteria. Which one of the following graphs correctly depicts bacterial load in this person over time?

Your answerChoose one option.