Which of these is not a characteristic of synaptic potentials? a. they are all-or-none in amplitude. b. they decrease in amplitude with distance. c. they are produced in dendrites and cell bodies. d. they are graded in amplitude. e. they are produced by chemically regulated gates?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

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.

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.