A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
Othymine, adenine, adenine, and cytosine

ITS C ON EDGENUITY 2020

If a strand of DNA contains the bases adenine, cytosine, cytosine and guanine the order  of the bases on the opposite strand is thymine, guanine, guanine and cytosine.

Explanation:

DNA contains a double strand, each of which contains a specific sequence of bases —adenine, thymine, cytosine and guanine— whose order determines the genetic information stored in this nucleic acid.

The sequence of bases on one DNA strand is complementary on the other strand, taking into account the complementarity of bases, i.e. the purines adenine and guanine are complemented by the pyrimidines thymine and cytosine, respectively:  

A = T

G ≡ C

So that the sequence A - C - C - G of one chain is complemented by the sequence T - G - G - C of the other.

    Taking into account the above information, the other options can be discarded, as they do not comply with the complementarity of bases in the DNA.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.