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Select the incorrectly matched pairs. (a...

Select the incorrectly matched pairs.
(a) Purines - Nitrogenous bases cytosine, thymine and uracil
(b) Recombinant DNA - DNA formed by joining the DNA segments from two different sources.
(c) rRNA - RNA found in ribosomes
(d) ATP - The energy - carrying compound in the cell

A

Purines - Nitrogenous bases cytosine, thymine and uracil

B

Recombinant DNA - DNA formed by joining the DNA segments from two different sources.

C

rRNA - RNA found in ribosomes

D

ATP - The energy - carrying compound in the cell

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question of selecting the incorrectly matched pairs, we will analyze each option provided: 1. **Option A: Purines - Nitrogenous bases cytosine, thymine, and uracil** - Purines are a type of nitrogenous base that includes adenine (A) and guanine (G). - Cytosine (C), thymine (T), and uracil (U) are actually pyrimidines, not purines. - Therefore, this pair is incorrectly matched. 2. **Option B: Recombinant DNA - DNA formed by joining the DNA segments from two different sources** - Recombinant DNA (rDNA) is indeed formed by combining DNA from two different sources, often involving a gene of interest inserted into a plasmid. - This definition is correct, so this pair is correctly matched. 3. **Option C: rRNA - RNA found in ribosomes** - Ribosomal RNA (rRNA) is a type of RNA that is a structural component of ribosomes. - It is indeed found in ribosomes, making this pair correctly matched. 4. **Option D: ATP - The energy-carrying compound in the cell** - Adenosine triphosphate (ATP) is known as the energy currency of the cell and is responsible for storing and transferring energy within cells. - This definition is also correct, so this pair is correctly matched. After analyzing all the options, we can conclude that: **The incorrectly matched pair is:** - **Option A: Purines - Nitrogenous bases cytosine, thymine, and uracil**
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