Answer:
Explanation:
Hydrogen bonding is usually occur wen interaction with hydrogen atoms occur.
Hydrogen bonds joins DNA polymers because an hydrogen atom occur on on one base which is called hydrogen bond donors and another oxygen or nitrogen atoms on the base across from it which is called hydrogen bond acceptors.
Adenine “A” a purine and Thymine “T” a pyrimidine each have a donor and one acceptor, whereas Cytosine “C” a pyrimidine has one donor and two acceptors, and Guanine “G” a purine has one acceptor and two donors.
This atoms allows for hydrogen bond between them that gives them structure of DNA molecule.
A nucleotides is hydrogen bonded to T nucleotides while C nucleotides is hydrogen bonded to G nucleotide this is called complementary base pairing.
I think the answer is B, but I might be wrong
The Answer is D. The sun's large mass causes it to have significant gravitational force, holding planets in their orbital paths. The moon does not effect this pull, as the sun's pull is much stronger than the moon's. The moon is responsible for the tides of the Earth, and it in fact rotates around us.
Answer:
C
Explanation:
the largest star in the universe