200 million year to 550 million years old
The oceans on earth act as carbon sinks
the combustion of fossil fuels
atmospheric carbon dioxide is continuosly exchanged
vegetation and soil take in more co2 than they release
Answer:
What role does kudzu most likely play in the environment in the United States? Kudzu experiences loss due to overeating by livestock. Kudzu is very susceptible to harsh winter conditions. Kudzu outcompetes native plants for sunlight and nutrients
Explanation: yep
Answer:
A geneticist has devised a strategy to study protein translocation into the endoplasmic reticulum (ER) in yeast cells. She is interested in two different signal sequences that are thought to operate via slightly different translocation mechanisms. Using genetic engineering, she has fused the first signal sequence to a protein whose cytosolic expression is absolutely necessary for cell survival in the selective medium, but is inactive when in the ER. In the same cell, she has also fused the second signal sequence to a toxic protein whose cytosolic expression leads to cell lysis but is harmless when in the ER. Whereas wild-type cells undergo lysis upon the expression of these fusion proteins, she has been able to identify viable mutants, each of which has a loss-of-function mutation in a gene encoding a protein involved in membrane translocation. The products of these genes are probably ...
Explanation:
Involved in the transport of proteins with the first signal sequence but not the second one.
