|Treatment||Solution in dialysis tubing||Solution in cup||Initial volume (Vi) (mL)||Final volume (Vf) (mL)||Change in volume (Vf-Vi) (mL)||Percent change in volume (Vf-Vi)/Vi (mL)||Hypotonic, isotonic or hypertonic?|
|A||20% sucrose||20% sucrose|
|B||40% sucrose||20% sucrose|
|C||20% sucrose||40% sucrose|
Cell Types and Viruses
1. Collect the pencil, colored pencils, and paper, then open the Cell/Virus Components Tracing Guide.
2. Clear enough space to be able to draw. Designing a Prokaryote 1. Select a cell shape (1–3) on the Cell/Virus Components Tracing Guide, and draw it on the paper. This shape represents the prokaryote’s cell membrane.
2. Most prokaryotes have cell walls. Draw a thick line around the cell membrane to represent the cell wall.
3. Draw a magnified view of a small section of the cell membrane and cell wall (example, 35). Make a tiny box around this section, and draw lines connecting this box to a larger box. The larger box is called an inset, and it is a magnified view of the contents of the smaller box.
4. Choose from among the following options: a basic cell membrane (38), or a cell membrane with isoprene units (39). If the prokaryote has a basic cell membrane, draw either the gram-positive (36) or gram-negative (37) image in the inset box. These insets include representations of both the cell wall and cell membrane.
- Explain what the change in volume of the dialysis tube indicated. Describe what happened when the volume increased and when the volume decreased.
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
- flagellum (if applicable)
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
- endoplasmic reticulum
- Golgi apparatus
- optional internal organelles
- means of locomotion if applicable
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
- Based on your drawings, which have the most complex structure: eukaryotes, prokaryotes, or viruses? Which have the simplest structure? Click here to get assistance in this order