Answer:
In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic and abiotic compartments of Earth.
Explanation:
<em>Unknown source.</em>
Answer:
Plasmids are used in biotechnology.
Explanation:
A plasmid is a natural or artificially modified circular DNA molecule for use in biological research.
The researchers use the plasmids to insert a DNA fragment of interest, thanks to the cloning cassettes. They can clone genes to express proteins or RNAs and analyze them.
Answer:
Between A and T there are two hydrogen bonds, while there are three between C and G. Right: two complementary strands of DNA.
...
DNA and RNA base pair complementarity.
Explanation:
adenine(A), thymine(T), guanine(G), cytosine(C) A=T, G≡C
Answer:
Ural
Explanation:
It begins in Russia and continues in Asia.