Answer:
Complementary deoxyribonucleic acid (DNA) is DNA in which the sequence of the constituent molecules on one strand of the double stranded structure chemically matches the sequence on the other strand. A useful analog is to picture a key and a lock. ... Complementary DNA (cDNA) is a copy of a region of a strand of DNA.
Explanation:
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Answer:
It doesnot have a nucleus to increase the surface area
Explanation:
Red blood cells carry oxygen from our lungs to the rest of our bodies .Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.
An Elk is a consumer; it eats plants.
Answer:
The third option is correct.
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