2. why are enzymes necessary in order for chemical reactions to occur in living systems and organisms?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?