A scientist formed Chemical X in a laboratory. The material was then analyzed by other scientists.
Molecular Structure
of Chemical X

Analysis showed that the chemical was composed of long chains of repeated copies of
73. CH, molecules.
A researcher noticed that a similar CH2 molecular structure was also located in
the plasma membrane of an animal cell. This CH2 molecular structure contained a negatively
charged phosphate group. Which statement best describes the primary function of the CH2
and phosphate molecular structure located in the plasma membrane?
It catalyzes specific chemical reactions in the cytoplasm of a cell.
It allows a cell to regulate the movement of materials into and out of a cell.
It contains the genetic information needed for protein production.
Et stores the energy that a cell needs to perform various life processes.
ch words best complete the lettered blanks in the two sentences below?

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.