ISC Board Class 12 Biotechnology Sample Paper 2024-25: CISCE has made available the sample papers for all subjects for class 12 board students. The ISC Speciment papers consist of the important questions that might come in your exam as well. Therefore, by solving the Biotechnology sample paper, learners can boost their exam preparation. See section A of the sample paper here and for the other three sections, you can also download the PDF for free. Keep reading the full article to know. Check other links as well for other sample papers.
CHECK: ISC Board Class 12 Environmental Science Sample Paper 2024-25: Download Sample Paper PDF For Free!
General Instructions For All The Candidates
- You are allowed an additional 15 minutes for only reading the question paper.
- You must NOT start writing during reading time.
- This question paper has 8 printed pages.
- There are three sections in the paper: A, B and C. Internal choices have been provided in two questions in Section B and one question in Section C.
- Answer all questions.
- Section A consists of one question each carrying one mark.
- While answering Multiple Choice Questions in Section A, you are required to write ONLY one option as the correct answer.
- Section B consists of eight questions each carrying four marks.
- Section C consists of four questions each carrying seven marks.
- The intended marks for questions are given in brackets [ ].
ISC Board Class 12 Biotechnology Sample Paper 2024-25
| Question 1 | ||||||||||||||||||||||||
| (i) | While performing the process of the Western Blotting technique, the scientists use specific proteins. What type of proteins do the scientists use during this process? (Recall) | [1] | ||||||||||||||||||||||
| (ii) | A forensic scientist discovered a tiny spot of blood at a crime scene. The sample underwent 10 PCR cycles for 40 minutes. Calculate how many copies of DNA would be present at the end. (Application) | [1] | ||||||||||||||||||||||
| (iii) | Which nitrogenous base will NOT be present in the genetic material of a eukaryotic cell? (Recall) | [1] | ||||||||||||||||||||||
| (a) | Cytosine | |||||||||||||||||||||||
| (b) | Guanine | |||||||||||||||||||||||
| (c) | Thymine | |||||||||||||||||||||||
| (d) | Uracil | |||||||||||||||||||||||
| (iv) | The following proteins of given molecular weight are subjected to Gel electrophoresis.
Write the order of Sequence in which these proteins are isolated in a gel. (Analysis) | [1] | ||||||||||||||||||||||
| (v) | Give a reason for each of the following: (Understanding) | |||||||||||||||||||||||
| (a) | A good vector used in rDNA technology must have at least one selectable marker. | [1] | ||||||||||||||||||||||
| (b) | Continuous culture is preferred over batch culture. | [1] | ||||||||||||||||||||||
| (vi) | The base sequence in one of the strands of DNA is 5’ - TAG CAT GAT – 3’. | |||||||||||||||||||||||
| (a) | Write the base sequences of its complementary strand. (Analysis) | [1] | ||||||||||||||||||||||
| (b) | Explain the base complementarity rule. (Recall) | [1] | ||||||||||||||||||||||
| (vii) | Observe the following figure and answer the questions that follow: Figure 1
| |||||||||||||||||||||||
| (a) | Identify Figure 1. Where is this structure found? (Recall) | [1] | |
| (b) | What is its importance for a prokaryotic and a eukaryotic organism? (Understanding) | [1] | |
| (viii) | Answer the following questions. | ||
| (a) | Expand EMBL. (Recall) | [1] | |
| (b) | What is the variation in length of DNA fragments due to inherited differences in highly repetitive DNA, known as? (Understanding) | [1] | |
| (ix) | Given below are two statements marked Assertion and Reason. Read the two statements carefully and choose the correct option. Assertion: Trp operon is an inducible operon. Reason: Tryptophan inhibits the process of formation of Lactose in the Trp operon. (Understanding) | [1] | |
| (a) | Both Assertion and Reason are true and Reason is the correct explanation for assertion. | ||
| (b) | Both Assertion and Reason are true but Reason is not the correct explanation for assertion. | ||
| (c) | Assertion is true and Reason is false. | ||
| (d) | Both Assertion and Reason are false. | ||
| (x) | Given below are two statements marked Assertion and Reason. Read the two statements carefully and choose the correct option. Assertion: In gel electrophoresis, molecules get separated according to their charge-to-mass ratio. Reason: The more the charge on the molecule, the more is its mass. (Analysis) | [1] | |
| (a) | Both Assertion and Reason are true and Reason is the correct explanation for Assertion. | ||
| (b) | Both Assertion and Reason are true but Reason is not the correct explanation for Assertion. | ||
| (c) | Assertion is true and Reason is false. | ||
| (d) | Both Assertion and Reason are false. | ||
This is section A for the ISC Board Class 12 Biotechnology sample paper. To download the other 3 sections for free, we are providing the link below. To get other sample papers, keep checking other links and follow Jagran Josh.
CHECK: ISC Board Class 12 Biotechnology Sample Paper 2024-25: Free PDF Download
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