Answer: "Decreasing the salt concentration of the solution lowers DNA's melting point (Tm)" is not a true statement
Explanation:
Increasing salt concentration would lower the DNA's melting point (Tm), not otherwise.
For instance:
- In 8M urea (8M means 8 Moles per dm3), Tm is decreased by nearly 20°C.
- 95% formamide at room temperature would completely denature the double stranded DNA.
Thus, higher concentration of salts like urea or formamide lowers Tm, not otherwise
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere
Water evaporating is a chemical change so 4
The answer is B, trust me, I did this one before
Answer:
A cardiologist is a physician who specializes in the treatment of diseases of the heart and blood vessels, which affect the cardiovascular system. A practitioner must complete four years of medical school and then six or eight years of internal medicine and specialist cardiology training to become a cardiologist.
Explanation:
- Eijiro <3
