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22 May 2025, 04:03
Kudos
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DNA (Deoxyribonucleic Acid) is a molecule that contains the genetic instructions necessary for the growth, development, functioning, and reproduction of all known living organisms. DNA is a long, double-stranded molecule composed of four nucleotide building blocks: adenine (A), cytosine (C), guanine (G), and thymine (T). The structure of DNA is often referred to as a double helix, where two strands of DNA are wound together in a spiral shape, with the nucleotide bases forming pairs and connecting the two strands. Adenine pairs with thymine (A-T), and cytosine pairs with guanine (C-G), held together by hydrogen bonds. This base-pairing arrangement allows DNA to carry and store genetic information in the sequence of its nucleotide bases, which form a genetic code. DNA carries the genetic information that determines an organism's inherited traits from one generation to the next through a process called DNA replication and cell division.
For each of the following statements, select Correct if the statement is correct according to the information provided, otherwise select Incorrect.
| Correct | Incorrect | |
| The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA. | ||
| DNA and RNA are typically double-stranded molecules. | ||
| DNA is less stable than RNA. |
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Official Answer
The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA.: Correct
DNA and RNA are typically double-stranded molecules.: Incorrect
DNA is less stable than RNA.: Incorrect
22 May 2025, 04:03
Kudos
Bookmarks
Official Solution:
The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA.
• Tab 2 states that RNA contains uracil, which replaces thymine found in DNA. Thus, this statement is correct.
DNA and RNA are typically double-stranded molecules.
• Tab 2 states that RNA is typically single-stranded, while Tab 1 states that DNA is double-stranded. Thus, this statement is incorrect.
DNA is less stable than RNA.
• Tab 3 states that DNA is more stable and RNA is less stable. Thus, this statement is incorrect.
Correct answer:
The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA. "Correct"
DNA and RNA are typically double-stranded molecules. "Incorrect"
DNA is less stable than RNA. "Incorrect"
Bunuel
The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA.
• Tab 2 states that RNA contains uracil, which replaces thymine found in DNA. Thus, this statement is correct.
DNA and RNA are typically double-stranded molecules.
• Tab 2 states that RNA is typically single-stranded, while Tab 1 states that DNA is double-stranded. Thus, this statement is incorrect.
DNA is less stable than RNA.
• Tab 3 states that DNA is more stable and RNA is less stable. Thus, this statement is incorrect.
Correct answer:
The four nucleotide bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), which replaces thymine (T) found in DNA. "Correct"
DNA and RNA are typically double-stranded molecules. "Incorrect"
DNA is less stable than RNA. "Incorrect"
