GATE BT 2017 Paper 1 — page 18

Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.

A DNA strand of length 25 nm wraps diametrically around the circumference of a spherical histone-octamer once. The radius (nm) of the histone-octamer is ________. Given data:

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One hundred E. coli cells are each infected by a single

phage particle. The ratio of the number of phage particles committing to lysogeny to those committing to lysis is 4:1. Assuming that the average burst size is 80, the number of free phage particles released after one round of infection is ________.

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During anaerobic growth, an organism converts glucose (P) into biomass (Q), ethanol (R), acetaldehyde (S), and glycerol (T). Every mole of carbon present in glucose gets distributed among the products as follows:

1 (C-mole P)

0.14 (C-mole Q) + 0.25 (C-mole R) + 0.3 (C-mole S) + 0.31 (C-mole T)

From 1800 grams of glucose fed to the organism, the ethanol produced (in grams) is ________. Given data: Atomic weights (Da) of C = 12, H = 1, O = 16, and N = 14

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2017 · Paper 1

Question 52

Question 53

Question 54