The respiratory system contains the lungs, so the answer is C. Hope this helps.
1) They are cold blooded
2) They respire both by Skin and lungs.
3) They lay eggs in water ; they have a 3 chambered heart.
The sun evaporates the water from ponds, oceans...etc. There the water turns into water vapor, a gas. Then it participates from the cloud and restarts all over again.
If siRNA against a starch-branching enzyme was transmitted to humans, then it may affect the expression of glycogen-branching enzymes. RNAi inhibits gene expression.
Glycogen-branching enzymes are similar to starch-branching enzymes because glycogen bonds are similar to those observed between amylopectin.
The RNA interference (RNAi) pathway is an evolutionarily conserved mechanism used in molecular biology laboratories to inhibit the expression of target genes.
In the RNAi technique, a regulatory non-coding RNA called small interfering RNA (siRNA) that exhibits sequence complementary to the target gene sequence is used to inhibit and/or block the translation of the target mRNA (in this case, starch/glycogen-branching mRNA coding enzyme).
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Plants absorb<span> nutrients and </span>water<span> through their roots, but photosynthesis — the </span>process<span> by which </span>plants create<span> their fuel — occurs in the leaves. Therefore, </span>plants<span> need to </span>get<span> fluids and nutrients from the ground up through their stems to their </span>parts<span> that are above ground level. Just as animals, </span>plants<span> also contain vascular.</span>