DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled:
Correct answer: A. Thymidine
- A. Thymidine
- B. Deoxyribose sugar
- C. Uracil
- D. Adenine
Explanation
DNA synthesis can be specifically measured by estimating the incorporation of radio-labeled thymidine.Thymidine is one of the four nucleotides that make up DNA. When cells are incubated with radio-labeled thymidine, they use the radio-labeled thymidine to synthesize DNA and incorporate it into their DNA backbone. So, thymidine is an excellent measure of DNA synthesis in cells that have undergone the S-Phase of cell replication. The other options that you listed are not as specific measures of DNA synthesis: Uracil is a nucleotide that is found in RNA, not DNA. Deoxyribose is a sugar that is found in DNA, but it is not specific to DNA synthesis. Adenine is a nucleotide that is found in DNA, but it is not as specific to DNA synthesis as thymidine.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chromosomes questions
The eukaryotic genome differs from the prokaryotic genome because:
In E.coli, the repressor binds to the _ during lactose metabolism.
Which one of the following makes use of RNA template to synthesize DNA?
There are special proteins that help to open up the DNA double helix in front of the replication fork. These proteins are:
In protein synthesis, the polymerization of amino acids involves three steps. Which one of the following is not involved in the polymerization of protein?
Who proved that DNA is the basic genetic material?