Select the correct answer to complete the statement.
Compound microscopes focus light through
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to produce a magnified image.
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matter
lamps
fenses

How can you tell the difference between rough er from smooth er?

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.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca