GATE BT topic:biotechnology PYQs & Answers — Page 31

Questions 301–310 of 650. Imported answers require independent review unless marked reviewed.

Which of the following statements are CORRECT for a controller? P. In a proportional controller, a control action is proportional to the error Q. In an integral controller, a control action is proportional to the derivative of the error R. There is no “offset” in the response of the closed-loop first-order process with a proportional controller S. There is no “offset” in the response of the closed-loop first-order process with a proportional-integral controller

Your answerChoose one option.

P and Q only

P and R only

P and S only

Q and S only

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Which of the following are CORRECT about protein structure?

P. Secondary structure is formed by a repeating pattern of interactions among the polypeptide backbone atoms Q. Tertiary structure is the three-dimensional arrangement of the polypeptide backbone atoms only R. Quaternary structure refers to an assemble of multiple polypeptide subunits

Your answerChoose one option.

P and Q only

P and R only

Q and R only

P, Q and R

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The enzymes involved in ubiquitination of cell-cycle proteins are

Your answerChoose one option.

E₁ and E₂ only

E₁ and E₃ only

E₁ and E₄ only

E₁, E₂ and E₃

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The maximum parsimony method is used to construct a phylogenetic tree for a set of sequences. Which one of the following statements about the method is CORRECT?

Your answerChoose one option.

It predicts the tree that minimizes the steps required to generate the observed variations

It predicts the tree that maximizes the steps required to generate the observed variations

It predicts the tree with the least number of branch points

It employs probability calculations to identify the tree

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Which of the following spectroscopic technique(s) can be used to identify all the functional group of an antibiotic contaminant in food?

P. Infrared Q. Circular dichroism R. Nuclear magnetic resonance S. UV-Visible

Your answerChoose one option.

P only

P and R only

P, Q and R only

P, Q, R and S

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Adenine can undergo a spontaneous change to hypoxanthine in a cell, leading to a DNA base pair mismatch. The CORRECT combination of enzymes that are involved in repairing this damage is

Your answerChoose one option.

Nuclease, DNA polymerase, DNA ligase

Nuclease, DNA ligase, helicase

Primase, DNA polymerase, DNA ligase

Primase, helicase, DNA polymerase

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Consider the ordinary differential equation

. If

, the value(s) of

, using the Euler’s implicit method [

] with a step size of

, is (are)

Your answerSelect all correct options. You can choose more than one.

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Which of the following statements are CORRECT for an enzyme entrapped in a spherical particle?

Your answerSelect all correct options. You can choose more than one.

Effectiveness factor is ratio of the reaction rate with diffusion-limitation to the reaction rate without diffusion-limitation

Internal diffusion is rate-limiting at low values of Thiele modulus

Effectiveness factor increases with decrease in Thiele modulus

Internal diffusion-limitation can be reduced by decreasing the size of the particle

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Which of the following is(are) COMMON feature(s) for both aerobic and anaerobic bacterial cultures?

Your answerSelect all correct options. You can choose more than one.

Glycolysis

NAD

is the oxidising agent

Oxidative phosphorylation

Two net ATP molecules formed per glucose molecule

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Which of the following plot(s) is(are) CORRECT for an enzyme that obeys Michaelis-Menten kinetics, assuming

is the concentration of the substrate,

is the Michaelis constant, and

is the initial reaction velocity.

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Diagram for Biotechnology question 50 (figure 2)

Diagram for Biotechnology question 50 (figure 3)

Diagram for Biotechnology question 50 (figure 4)

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GATE BT topic:biotechnology PYQs

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50