The chemical bonds that hold the two strands of DNA together are hydrogen bonds.
- Deoxyribonucleic acid (DNA) is a double helix composed of two long chains of nucleotides linked together via hydrogen bonds.
- In DNA, there are four different classes of nucleotides, each one containing one different nitrogenous base (i.e., Adenine, Thymine, Guanine and Cytosine).
- According to the base pair rules, Adenine always pairs with Thymine via two hydrogen bonds, whereas Cytosine always pairs with Guanine via three hydrogen bonds.
In conclusion, the chemical bonds that hold the two strands of DNA together are hydrogen bonds.
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If an animal cell is surrounded by fresh water, the water will move within the cell causing the cell to become turgid and eventually will burst.
Therefore the most suitable answer is option D.
If the medication may cause drowsiness, the person taking them does not need to drive, operate machinery, or conduct any other business that requires one to be alert.
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sorry I dont really understand the question
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Other species that rely on those fish would die off. The extinction of one species can lead to the extinction of another and so on.
