Question:
DNA does not contain:
DNA does not contain:
Show Hint
DNA contains CHONP elements (Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus).
Updated On: Jun 20, 2026
- Nitrogen
- Sulphur
- Phosphate
- Hydrogen
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding DNA composition.
DNA is made up of nucleotides which contain a sugar, phosphate group, and nitrogenous bases.
Step 2: Elements present in DNA.
DNA contains carbon, hydrogen, oxygen, nitrogen, and phosphorus.
Step 3: Checking sulphur presence.
Sulphur is not a structural component of DNA. It is found in some amino acids (like cysteine and methionine), not DNA.
Step 4: Evaluating options.
- Nitrogen: Present in nitrogenous bases.
- Phosphate: Present in backbone.
- Hydrogen: Present in sugars and bases.
- Sulphur: Absent in DNA.
Step 5: Logical reasoning.
Since DNA lacks sulphur, it is the correct answer.
Step 6: Final conclusion.
Therefore, DNA does not contain sulphur.
DNA is made up of nucleotides which contain a sugar, phosphate group, and nitrogenous bases.
Step 2: Elements present in DNA.
DNA contains carbon, hydrogen, oxygen, nitrogen, and phosphorus.
Step 3: Checking sulphur presence.
Sulphur is not a structural component of DNA. It is found in some amino acids (like cysteine and methionine), not DNA.
Step 4: Evaluating options.
- Nitrogen: Present in nitrogenous bases.
- Phosphate: Present in backbone.
- Hydrogen: Present in sugars and bases.
- Sulphur: Absent in DNA.
Step 5: Logical reasoning.
Since DNA lacks sulphur, it is the correct answer.
Step 6: Final conclusion.
Therefore, DNA does not contain sulphur.
Was this answer helpful?
0
0
Top AP EAPCET Biology Questions
- In which group of algae are food materials stored in pyrenoids?
- Which plant hormone is responsible for apical dominance?
- The genetic material in bacteriophages is:
- Which of the following is the structural and functional unit of the kidney?
- Which of the following organisms exhibits alternation of generations?
View More Questions
Top AP EAPCET Structure of DNA and RNA Questions
- The bonds between Guanine and Cytosine are:
- Proportionality of DNA-Nucleotide base pairing is observed by
- Based on the below representation of Central Dogma – Genetic information flows from Replication:
- The ploidy of zygote, endosperm, egg cell, nucellus respectively are
- Where can an alien DNA be cloned or made into multiple copies?
View More Questions
Top AP EAPCET Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- The four quantum numbers of the valence electron of potassium are :
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
View More Questions