GATE BT topic:biology PYQs & Answers — Page 45

Questions 441–450 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 45 of 65

Which of the following statements about gene therapy are CORRECT?

[P] Affected individuals, but not their progeny, can be cured through germline gene therapy

[Q] Affected individuals, as well as their progeny, can be cured through germline gene therapy

[R] Affected individuals, but not their progeny, can be cured through somatic gene therapy

[S] Affected individuals, as well as their progeny, can be cured through somatic gene therapy

Your answerChoose one option.

P and R only

P and S only

Q and R only

Q and S only

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Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].

Assertion [a]: A genetically engineered rice that produces beta-carotene in the rice grain is called Golden rice

Reason [r]: Enabling biosynthesis of provitamin A in the rice endosperm gives a characteristic yellow/orange color

Your answerChoose one option.

Both [a] and [r] are false

Both [a] and [r] are true but [r] is not the correct reason for [a]

Both [a] and [r] are true and [r] is the correct reason for [a]

[a] is true but [r] is false

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The sequence of a 1 Mb long DNA is random. This DNA has all four bases occurring in equal proportion. The number of nucleotides, on average, between two successive EcoRI recognition site GAATTC is ____________.

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E. coli was grown in ¹⁵N medium for several generations. Cells were then transferred to ¹⁴N medium, allowed to grow for 4 generations and DNA was isolated immediately. The proportion of total DNA with intermediate density is __________ (round off to 2 decimal places).

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A batch reactor is inoculated with 1 g/L biomass. Under these conditions, cells exhibit a lag phase of 30 min. If the specific growth rate in the log phase is 0.00417 min⁻¹, the time taken for the biomass to increase to 8 g/L is ____________ min (round off to 2 decimal places).

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The system of linear equations

has no solution when c is equal to ________________.

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The amino acid sequence of a peptide is Phe-Ile-Ile-Met-Ser-Leu. The number of codons that encode the amino acids present in this peptide is given below:

Phe: 2 codons

Leu: 6 codons

Ile: 3 codons

Met: 1 codon

Ser: 4 codons

The number of unique DNA sequences that can encode this peptide is __________.

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Assume that a cell culture was started with five human fibroblast cells. Two cells did not divide even once whereas the other three cells completed three rounds of cell division. At this stage, the total number of kinetochores in all the cells put together is ____________.

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Growth of an organism on glucose in a chemostat is characterized by Monod model with specific growth rate = 0.45 h⁻¹ and Kₛ = 0.5 g/L. Biomass from the substrate is generated as Yₓₛ = 0.4 g/g. The chemostat volume is 0.9 L and media is fed at 1 L/h and contains 20 g/L of glucose. At steady state, the concentration of biomass in the chemostat is ______________ g/L.

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A function f is given as:

The function f is maximized when X is equal to __________.

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GATE BT topic:biology PYQs

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