2 is correct all animals have a similar goal is survive and reproduce
The nitrogenous bases Adenine form two hydrogen bonds with thymine and the cytosine form three hydrogen bonds with the guanine. Simply, A combines with T and G combines with the C. It is often called as a complementary base pairing because of each base pair bonds only with its specific complementary base partner in a DNA molecule.
Explanation:
the action or process of fertilizing an egg involving male and female gamete to form zygote is fertilization. fertilization result in zygote.
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C. proteins-
The cytoskeleton is what provides structural support for a cell, and the cytoskeleton is made out of fibrous proteins.
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8 protons because a element always has the same number of protons as its atomic number
