Farmers are excited to learn that scientists have discovered that if the proton pyrophosphatase pump is in an area where the concentration gradient is too high (with too many hydrogen ions on one side), the pump works in the opposite direction. this allows more sugars to be passed into neighboring cells. sugars are needed for energy and plant growth, so in effect, this move sugars around the plant without using more materials. the plant roots grow longer and are able to absorb more nutrients. explain why this finding is important.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Which of the following shows the correct order in which light information travels through the eye? (2 points) lens, pupil, retina, optic nerve pupil, lens, retina, optic nerve pupil, lens, optic nerve, retina lens, pupil, optic nerve, retina

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it