Which brand of hand sanitizer has more efficacy Purell 2x, Germ-x, and Publix Hand Sanitizer.
Answer: Option D
Explanation:
Hershey and Chase were the scientist that concluded that DNA is the genetic material which is transferred from one generation to another generation.
Before their experiment, people used to believe that protein is the genetic material.
Hershey and Chase conducted an experiment on bacteriophage where Radioactive phosphrous was transferred along with DNA in the cell.
This proved that DNA is the genetic material that transferred information from one generation to another.
Answer:
Polar
Explanation:
In a water molecule, the oxygen atom is bigger and has a greater pull on the electrons than the hydrogen atoms do. This makes the molecule polar.
Answer: The sun
Explanation: Primary producers obtain their energy via the sun through the process of photosynthesis.
To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).
