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Biotechnology and its Applications · Question 14

RE-NEET (UG) 2024MCQMedium📈 Topic in 75% papers+4−1
1

Following are the steps involved in action of toxin in Bt. Cotton Choose the correct sequence of steps from the options given below:

  1. E C B A D
  2. B C A E D
  3. A E B D C
  4. B E C A D

Answer

(4) B E C A D

Solution

B. Bacillus thuringiensis forms protein crystals containing the insecticidal protein.

E. In the bacterium, these proteins exist as inactive protoxins.

C. When the insect eats them, the alkaline pH of its gut solubilises the crystals.

A. The inactive toxin is converted into the active form.

D. The activated toxin binds to the surface of midgut epithelial cells, creates pores and causes death of the insect.

Sequence: B E C A D

Answer: (4)

RE-NEET (UG) 2024

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2

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below.

  1. Statement I is true but Statement II is false.
  2. Statement I is false but Statement II is true.
  3. Both Statement I and Statement II are true.
  4. Both Statement I and Statement II are false.
RE-NEET (UG) 2024
3

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

  1. Serum and Urine analysis
  2. Polymerase Chain Reaction (PCR) technique
  3. Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
  4. Recombinant DNA Technology
NEET (UG) 2023
4

Transposons can be used during which one of the following?

  1. Polymerase Chain Reaction
  2. Gene Silencing
  3. Autoradiography
  4. Gene sequencing
NEET (UG) 2022
5

In gene therapy of Adenosine Deaminase (ADA) deficiency, the patient requires periodic infusion of genetically engineered lymphocytes because:

  1. Retroviral vector is introduced into these lymphocytes.
  2. Gene isolated from marrow cells producing ADA is introduced into cells at embryonic stages
  3. Lymphocytes from patient's blood are grown in culture, outside the body
  4. Genetically engineered lymphocytes are not immortal cells.
NEET (UG) 2022
6

Statements related to human Insulin are given below. Which statements is/are correct about genetically engineered Insulin? Choose the most appropriate answer from the options given below :

  1. A, B and D only
  2. B only
  3. C and D only
  4. C, D and E only
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7

Milk of transgenic ‘Cow Rosie’ was nutritionally more balanced product for human babies than natural cow milk because it contained:

  1. Human enzyme Adenosine Deaminase (ADA)
  2. Human protein α-1-antitrypsin
  3. Human alpha-lactalbumin
  4. Human insulin-like growth factor
NEET (UG) 2022 (Phase 2)
8

When gene targeting involving gene amplification is attempted in an individual's tissue to treat disease, it is known as :

  1. Safety testing
  2. Biopiracy
  3. Gene therapy
  4. Molecular diagnosis
NEET (UG) 2021
9

Which of the following is not an application of PCR (Polymerase Chain Reaction)?

  1. Detection of gene mutation
  2. Molecular diagnosis
  3. Gene amplification
  4. Purification of isolated protein
NEET (UG) 2021
10

Now-a-days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise to its complementary DNA in a clone of cells, followed by its detection using autoradiography because:

  1. mutated gene does not appear on photographic film as the probe has complementarity with it
  2. mutated gene partially appears on a photographic film
  3. mutated gene completely and clearly appears on a photographic film
  4. mutated gene does not appear on a photographic film as the probe has no complementarity with it
NEET (UG) 2021
11

With regard to insulin choose correct options. Choose the correct answer from the options given below.

  1. A and D only
  2. B and D only
  3. B and C only
  4. A, C and D only
NEET (UG) 2021

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