Question

В ДНК на долю нуклеотидов с аденином приходится 18%. Определите процентное содержание нуклеотидов с цитозином, входящих в состав молекулы. В ответе запишите только соответствующее число.

Answer 1

Ответ строится по правилу комплиментарность
А-Т
Г-Ц
Если у вас было 18% аденита то и Тимины будет 18 %
18+18 =36 %
Всего у вас 100% , тогда вы от 100 отнимаете % с тимином и аденином
100-36 = 64 %
И делите 64 % на 2 так как Г=Ц
64:2=32
Ответ:32

Answer 2

Аденин(18%) => тимин (18%)
100%-(18%+18%)= 64%
64:2=32
гуанин(32%) и цитозин(32%)
Ответ: 32

Answer 3

Calculating the Percentage of Cytosine Nucleotides in DNA

In the given information, it is stated that the percentage of adenine nucleotides in DNA is 18%. We need to determine the percentage content of cytosine nucleotides in the DNA molecule.

To calculate the percentage of cytosine nucleotides, we can use the complementary base pairing rule in DNA, where adenine pairs with thymine and cytosine pairs with guanine. This means that the sum of adenine and thymine percentages is equal to the sum of cytosine and guanine percentages, which is 100%.

Using this information, we can calculate the percentage of cytosine nucleotides.

Calculation: - Adenine percentage = 18% - Thymine percentage = ? - Cytosine percentage = ? - Guanine percentage = ?

According to the complementary base pairing rule: - Adenine + Thymine = 100% (since they are complementary bases) - Cytosine + Guanine = 100% (since they are complementary bases)

Given that adenine is 18%, we can calculate the percentage of thymine: - Thymine = 100% - Adenine = 100% - 18% = 82%

Now, we can calculate the percentage of cytosine: - Cytosine = Guanine = (100% - Thymine) / 2 = (100% - 82%) / 2 = 9%

Answer: The percentage content of cytosine nucleotides in the DNA molecule is 9.