Lab Module Three Biology

Name: _Paul Sangeavur Nomsule_____________________________ Date: _01/28/2024_____________________________ BIO 120L Module Three Lab Report: Cell Structure and Function Data Activity 1 Data Table 1a Length ( l) (cm) Width ( w ) (cm) Height ( h ) (cm) Size of cross section slice (h x w) (cm) Distance traveled by I 2 KI from potato edge (cm) Area of white region (l × w) (cm 2 ) 2.50 2.50 2.50 2.50 x 2.50 = 6.25 .68 2.50 x 2.50 =6.25 2.00 2.00 1.00 2.00 x 1.00 = 2.00 .51 2.00 x 2.00 =4.00 1.50 1.50 1.50 1.50 x 1.50 = 2.25 .42 1.50 x 1.50 =2.25 1.00 1.00 1.00 1.00 x 1.00 = 1.00 .22 1.00 x 1.00 =1.00 2.00 0.50 0.50 0.50 x 0.50 = 0.25 .21 2.00 x .50 =1.00 0.50 0.50 0.50 0.50 x 0.50 = 0.25 .22 .50 x .50 =.25

1 Data Table 1b Lengt h ( l ) Widt h ( w ) Heig ht ( h ) Surface area of block ( l x w x 2) + ( w x h *4) (cm 2 ) Volum e (l x w x h ) (cm 3 ) Surface area/volum e Surfac e area of slice ( w x h ) (cm 2 ) Surface area of white section (cm 2 ) Surface area of black section (cm 2 ) Surface area of black section/surfa ce area of slice 2.50 2.50 2.50 2.50x2. 5… =15.6 0 37.50/15 .60 = 6.25 4.00 2.3 2.3/6.25= 0.358 2.00 2.00 1.00 = 16.00 = 4.00 16.00/4. 00 = 2.0 3.00 15.8 7.9 1.50 1.50 1.50 = 13.50 = 3.4 13.50/3. 4 =4.00 = 2.25 2.40 .50 0.125 1.00 1.00 1.00 = 6.00 = 1 6.00/1.0 0 =6.00 1.00 = 4.40 .42 0.42 0.50 0.50 2.00 = 4.50 = .50 4.50/.50 = 9.00 = .2 5 1.30 .60 2.4 0.50 0.50 0.50 1.5 .13 1.5/.13 = 11.54 .25 .2 .1 0.4 1. The potato blocks used in this experiment are rich in starch molecules. Iodine potassium iodide is a starch indicator that forms a blue-black complex in the presence of starch. What does the width of the black of the potato cube represent in the context of diffusion? The dark coloration of the potatoes demonstrate the degree to which the chemical permeated into the potatoes. It also demonstrated the depth to which the chemical penetrated the cells of the potatoes. 2. How does the width of the black iodide starch complex of each potato block compared to the others? Why? Density of the potatoes matters in this experiment. The smaller the density of the potatoes, the more pigmentation the cells were able to absolve. © 2016 Carolina Biological Supply Company

3 Photos Photo 1 Insert the photo or scan of your prokaryotic cell drawing from Activity 3. The following should be indicated in this photo:  cell membrane type  circular DNA  ribosomes  flagellum (if applicable) © 2016 Carolina Biological Supply Company

4 Photo 2 Insert the photo or scan of your eukaryotic cell drawing from Activity 3. The following should be indicated in this photo:  double-stranded DNA inside a nuclear membrane  ribosomes  mitochondria  endoplasmic reticulum  lysosomes  Golgi apparatus  vesicles  optional internal organelles  means of locomotion if applicable © 2016 Carolina Biological Supply Company

6 Photo 3 Insert the photo or scan of your virus drawing from Activity 3. The following should be indicated in this photo:  capsid shape  DNA or RNA, if it is single stranded or double stranded, and the replication direction 4. Based on your drawings, which have the most complex structure: eukaryotes, prokaryotes, or viruses? Which have the simplest structure? © 2016 Carolina Biological Supply Company

7 Certainly, the Eukaryotic cell is the most complex system and structure. Prokaryotes are more complex than the viral cell. The virus is the simplest of all. © 2016 Carolina Biological Supply Company