Question

because you scraped them off the lining clumps because Lab Exercise 7 praw two or the label the cell memb vo or three cells at high power magnification in the space provided below, cell membrane, cytoplasm, and nucleus of at least one of the cells. Draw and label: Cell Membrane Cytoplasm Nucleus DRAWING OF SEVERAL SQUAMOUS EPITHELIAL CELLS Estimate the width of a typical squamous epithelial cell, using one (or both!) of the quations at the top of page 222, based on the following approaches: Approach A: What % of the diameter of the field of view is occupied by a single cell? of the diameter on the following asing one (or both!) of the Approach B: Approximately how many cell lengths would span the diameter of the field? Magnification used: um Diameter of field at this magnification: Estimated size of a typical squamous epithelial cell: um 7. Discard the slide and cover slip in the waste container for glass. Questions: 1. What is the function of the chloroplasts? 2. The photogr. The photograph in the next page is a view of Elodea cells at 1,000x magnification using a compound light microscope that has field of view of 5,000 pum at 40x magnification. Use this to determine the length and width of these Elodea cells.

Answer 1

1) Chloroplasts are the site of photosynthesis in eukaryotic cells. They are only present in photosynthetic cells like plant cells and algae. There are no chloroplasts in animal or bacterial cells. The major functions of the chloroplasts include

1. Absorption of light energy and conversion of it into biological energy.
2. Production of NAPDH2 and evolution of oxygen through the process of photolysis of water.
3. Production of ATP by photophosphorylation. NADPH2 and ATP are the assimilatory powers of photosynthesis. Transfer of CO2 obtained from the air to 5 carbon sugar in the stream during the dark reaction.
4. Breaking of 6-carbon atom compound into two molecules of phosphoglyceric acid by the utilization of assimilatory powers.
5. Conversion of PGA into different sugars and store as starch.

2)As there is no diagram given in the question, It is difficult to calculate the size as the estimated number of cells that cross the diameter is not available.

The diameter of the field of view / Estimated number of cells that cross the diameter =length of one cell

6)The equations are not given for these questions.