MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Significance of Protein

A eukaryotic ...

Question

A eukaryotic cell is grown in a medium containing radioactive thymine. A gene of 40kb size expresses in the cell. Which of the following molecules will show radioactivity?

A

DNA, RNA, and protein

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

DNA and RNA

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

DNA only

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

DNA, RNA, protein, and lipids

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C DNA only
The nitrogenous bases adenine, thymine, guanine, and cytosine are present in the DNA while RNA contains uracil instead of thymine. Nitrogenous bases are absent in the proteins and lipids. As thymine is present only in the DNA, the radioactivity will appear in the DNA alone.

Suggest Corrections

thumbs-up

1

Similar questions

Q. A plant cell was grown in a test tube containing radioactive nucleotides, the parts from which DNA is built. Later examination of the cell showed the radioactivity to be concentrated in the

Q. A cell is grown in a solution containing radioactive nucleotides for one generation. It is removed from the radioactive solution and grown in a normal medium in the next generation. If a dotted line represents a radioactive DNA strand and a solid line represents a non-radioactive DNA strand, which of the following depicts the DNA of the four cells in the second generation?
(correct answer + 2, wrong answer - 0.50)

Q. If a meristematic cell is placed in a medium containing radioactive thymidine, radioactivity will be first observed in

Q. An animal cell was grown in a culture medium containing

p^{32}

nucleotides, the part from which DNA is built. Later examination of the cell showed the radioactivity to be concentrate in the:-

Q. Animal cells uses thymine primarily for the synthesis of DNA. A group of sea urchin eggs was fertilized in sea water containing radioactive thymine. Following fertilization, samples of embryos were removed at regular intervals and the radioactivity in the nucleic acid was measured in counts per minute. The results obtained are shown in the given figure.
The radioactivity of the embryos increases with time probably results from

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Central Dogma of Molecular Biology

BIOLOGY

Watch in App

explore_more_icon

Explore more

Significance of Protein

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon