Answer:
The correct answer is nucleus
Explanation:
DNA is made up of nucleotides, a deoxyribose sugar, and a phosphate group. There are four types of nucleotides which make the DNA that are adenine, guanine, cytosine, and thymine. DNA is formed inside the nucleus and after transcription, it forms RNA that moves out of the nucleus through the nuclear pore.
So if a plant cell containing radioactive nucleotides is grown in a test tube than after examination of cell the radioactivity will be concentrated in the nucleus because DNA is formed in the nucleus and nucleotide are its constituent.
Answer:
8 or 0
Explanation
is one of the inert elements
<span>The question says, 'during embryonic development, if the anus develop before the mouth, the organism is a ............ The correct option is B. In deuterostome during embryonic development anus develops first from or near embryonic blastopore, mouth develops later at some distance from the blastopore or from the opposite end.</span>
C. Adaptation
Adaptation is a physical characteristic that helps an organism survive in an environment. The answer is not population because a population is a group of organisms of the same species in an area. It's not evolution because evolution is the process that brings about favorable adaptations. It's not ecosystem because an ecosystem is an environment where the populations interact. Adaptation is the clearest correct answer, because an adaptation is a physical structure.