3. the bright field microscopy image (left) shows an onion epidermal cell. its
measured length is 52,000 pm (52 mm). the image has been magnified
140 x. calculate the actual size of the cell:

371pm

Explanation:

To calculate the actual size of the cell, divide the image size by the magnification.

52,000pm ÷ 140X = 371.4285pm

≈ 371pm

Round based on the number of decimals in the question.

Round down because the first decimal place is less than 5. If the first decimal was 5 or more, round up (to 372).

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.