Carbon-14 dating method is based on the fact that
- carbon-14 fraction is same in all objects
- carbon-14 is highly insoluble
- ratio of carbon-14 and carbon-12 is constant
- All of the above
The Correct Option is C
Solution and Explanation
Age of wood $=\frac{2.303}{.693}\times T_{0.5} log\Bigg(\frac{N^0}{N}\Bigg)$
$\, \, \, \, \, \, \, \, \, \, \, \, \, \Bigg[\frac{Ratio of C^{14} / C^{12} in living wood}{Ratio of C^{14} / C^{12} in dead wood}\Bigg]$
Hence, it is based upon the ratio of $C^{14} and C^{12}$
Top Questions on Nucleic Acids
Nucleotides are joined together by:
- CBSE CLASS XII - 2025
- Chemistry
- Nucleic Acids
- Assertion (A): Uracil base is present in DNA. Reason (R): DNA undergoes self-replication.
- CBSE CLASS XII - 2024
- Chemistry
- Nucleic Acids
- Two nucleotides are joined together by a linkage known as:
- JEE Main - 2024
- Chemistry
- Nucleic Acids
- Identify the polarity from ‘X’ to ‘Y’ in the mRNA segment shown. Mention how many more amino acids can be added to the polypeptide that is being translated and why.
- CBSE CLASS XII - 2024
- Biology
- Nucleic Acids
- Given below are two statements:
I. Cytosine and guanine are formed in equal quantities in DNA hydrolysis.
II. Adenine and uracil are formed in equal quantities in RNA hydrolysis. The correct answer is:- AP EAPCET - 2024
- Chemistry
- Nucleic Acids
Questions Asked in NEET exam
Consider a water tank shown in the figure. It has one wall at \(x = L\) and can be taken to be very wide in the z direction. When filled with a liquid of surface tension \(S\) and density \( \rho \), the liquid surface makes angle \( \theta_0 \) (\( \theta_0 < < 1 \)) with the x-axis at \(x = L\). If \(y(x)\) is the height of the surface then the equation for \(y(x)\) is: (take \(g\) as the acceleration due to gravity)
- NEET (UG) - 2025
- Surface Tension
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.
Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.- NEET (UG) - 2025
- Cell Biology
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
- NEET (UG) - 2025
- Electromagnetic Induction and Inductance
Among the following, choose the ones with an equal number of atoms.
- 212 g of Na2CO3 (s) [molar mass = 106 g]
- 248 g of NaNO3 (s) [molar mass = 62 g]
- 240 g of NaOH (s) [molar mass = 40 g]
- 12 g of H2 (g) [molar mass = 2 g]
- 220 g of CO2 (g) [molar mass = 44 g]
Choose the correct answer from the options given below:
- NEET (UG) - 2025
- Stoichiometry and Stoichiometric Calculations
In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω(t) and average amplitude A(t) of the system change with time t. Which one of the following options schematically depicts these changes correctly?
- NEET (UG) - 2025
- Waves and Oscillations
Concepts Used:
Nucleic acids
Nucleic acids are explained as long-chain polymeric molecules, where the monomer (the repeating unit) is referred to as the nucleotides. Thus many times nucleic acids are referred to as polynucleotides. The two main kinds of nucleic acids are-
Deoxyribonucleic Acid (DNA)
Chemically, DNA is a composition of a pentose sugar, phosphoric acid, and some cyclic bases that have nitrogen in them. DNA has β-D-2-deoxyribose in it, in the form of the sugar moiety.
Ribonucleic Acid (RNA)
The RNA molecule is a composition of phosphoric acid, a pentose sugar, and some cyclic bases containing nitrogen. The sugar moiety inside RNA molecules is β-D-ribose.