Answer:
The correct answer is "cleaves the Holliday intermediate by replacing one RuvA with RuvC".
Explanation:
RuvABC is a three proteins complex that is critical for DNA repair in bacteria. RuvAB is a helicase that is comprised of two of the tetramers of the complex that besides mediating branch migration, cleaves the Holliday intermediate by replacing one RuvA with RuvC. RuvAB perform its molecular activity by by localized denaturation and reannealing.
Answer:
First two rings are thicker while the last two rings are thinner.
Explanation:
Due to the first two years of optimal growing conditions received by the tree, the width of trunk of the tree is thicker but due to drought conditions experienced by the tree during the most recent two years, there is very little increase occur in the width of the trunk because the tree is in stress condition and for that reason the ring of trunk is thinner as compared to first two years.
Mammalia - mammals
<span>Aves - birds </span>
<span>Amphibia - amphibians </span>
<span>Reptilia - reptiles </span>
<span>Chondrichthyes - sharks, stingrays</span>
Answer:
all
Explanation:
Biogeochemical cycles are pathways by which nutrients flow between the abiotic and abiotic compartments of the Earth. The abiotic portion of the Earth includes the lithosphere (the geological component of the Earth) and the hydrosphere (the Earth’s water).
Ecosystems rely on biogeochemical cycles. Many of the nutrients that living things depend on, such as carbon, nitrogen, and phosphorous are in constant circulation.
Essential elements are often stored in reservoirs, where they can be taken out of circulation for years. For example, coal is a reservoir for carbon.
Humans can affect biogeochemical cycles. Humans extract carbon and nitrogen from the geosphere and use them for energy and fertilizer. This has increased the amount of these elements in circulation, which has detrimental effects on ecosystems.