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DedPeter [7]
3 years ago
11

Which of the following statements about comets is true? PLZ HLEP ASAP

Biology
1 answer:
erastova [34]3 years ago
5 0

Answer:

Answer choice B.

Explanation:

Comets are usually made up of ice, dust, and gas, meaning that options A and D are wrong. Also, as a comet approaches the sun, its particles heat up so quickly that they don't have time to become liquid; they turn straight from solid to gas. This makes them very visible when they come near the sun. Therefore, the correct answer is B. Hope this helps!

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Some disadvantages

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The dna content for an organism is analyzed. The results showed that 21% of the nucleotides contained the nitrogenous base adeni
Serjik [45]

If the results show that 21% of the nucleotides contain adenine, then the cytosine fraction in vivo is 29% and the thymine fraction is also 21% (options A and C).

<h3>Define double helix model of DNA?</h3>
  1. DNA is a double helix molecule made up of two long strands of nucleotides.
  2. There are four types of nucleotides in DNA, each containing a different nitrogenous base: adenine, guanine, thymine, cytosine.
  3. Adenine always pairs with thymine and guanine pairs with cytosine, according to the base-pairing rules.
  4. As a result, the percentage of adenine equals the percentage of thymine, and the remaining percentage equals guanine + cytosine (29 + 29 = 58 >> 58 + 21 + 21 = 100).
  5. Therefore, if the results show that 21% of the nucleotides contain adenine, then the percentage of cytosine in vivo is 29% and the percentage of thymine is also 21%

To know more about double helix model of DNA, visit:

brainly.com/question/3789581

#SPJ4

The complete question is as follows:

The DNA content for an organism is analyzed. The results showed that 21% of the nucleotides contained the nitrogenous base adenine. What else can be inferred based on this data? Select all that apply

A) The percentage of cytosine is 29%.

B) The percentage of adenine is 21% for all organisms.

C) The percentage of thymine in the organism is also 21%.

D) The percentage of guanine in the organism is also 21%.

E) The percentage for cytosine in the organism is also 21%.

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