Question
The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder? phosphate groups nitrogenous base pairs ribosomes
Ask by Schwartz Pope. in the United States
Mar 06,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The rungs of the DNA ladder are formed by nitrogenous base pairs.
Solution
The structural components that form the rungs of the DNA ladder are the **nitrogenous base pairs**.
Here's a brief explanation of the components:
1. **Phosphate groups**: These are part of the backbone of the DNA structure, along with sugar molecules, but they do not form the rungs.
2. **Nitrogenous base pairs**: These are the actual rungs of the ladder, consisting of pairs of nitrogenous bases (adenine with thymine, and cytosine with guanine) that are connected by hydrogen bonds.
3. **Ribosomes**: These are not a component of DNA; they are involved in protein synthesis and are found in the cytoplasm of cells.
Thus, the correct answer is **nitrogenous base pairs**.
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Mind Expander
The rungs of the twisted ladder structure of DNA are formed by nitrogenous base pairs. These pairs consist of four different bases that can pair up: adenine with thymine and guanine with cytosine, creating a complementary bond that holds the two strands together. While imagining DNA, it’s essential to note how it plays a significant role in genetics. For every organism, DNA carries the instructions necessary for growth, development, and overall functioning. It's like the ultimate recipe book of life, ensuring that every cell knows its job!