In our world Cells come in two basic types-
Prokaryotic Cells – Bacterial & Archaea
Eukaryotic Cells – Plant, Animal, Protist, and Fungi (Yeasts are single celled fungi)
Use your book and/or this video lesson to
List the major differences between Prokaryotes and Eukaryotes-
Robert Hooke- was the first scientist to use the biological term cell as he described thin slices of cork.
View a sample of cork from a wine bottle:
- Sketch the cork cells you are viewing and label the parts of the cell that you observe.
- What type of cells are the cork cells you are viewing?
- From what species are traditional corks typically made of? https://en.wikipedia.org/wiki/Cork_(material)
- Are mature cork cells alive or dead? http://www.microscopyu.com/gallery-images/cork-cells-1
- Look at the living plant Elodea.
- Draw what you see and label the cell wall and chloroplasts.
- Add some salt water to the slide and look at it again.
- Draw what you see.
- What happened to the cell after the salt water was added?
Paste images of your plant cell drawings here:
In lecture we learned that most plants store extra sugar (glucose) as starch.
- Look at a potato cell and stain it with iodine.
- Draw what you see. (Iodine stains starch grains a dark purple)
- In what structures are starch grains stored in a plant cell?
- Look at red blood cell samples of humans, birds, and fish
- How does human “mammalian blood” differ from non-mammal animal blood?
- How is this difference possible? https://www.reference.com/science/human-blood-differ-animal-blood-a047b4136676a8c7
Viewing the Human Cheek Cell-
Tutorial videos for viewing human cheek cells- https://www.youtube.com/watch?v=i2x3MKSJez4
– Prepare your own human cheek cells on a microscope slide and examine them under the microscope.
- Sketch your human cheek cells and be sure to label your magnification
- Take a picture of your sketches & paste it here:
- Cut & paste some additional online digital images of human cheek cells:
Virtual Gram Staining Lab- https://www.brainpop.com/games/virtuallabsgramstaining/
Gram Staining Video- https://www.youtube.com/watch?feature=player_embedded&v=vlnIDGmgQfk
(You don’t have to do the virtual lab just use the information to answer the following questions)
Why do gram positive bacteria stain purple? ____________________________________ __________________________________________________________________________________________________________________________________________________________________________
Why do gram negative bacteria stain red? ____________________________________ __________________________________________________________________________________________________________________________________________________________________________
Real World Application Questions- (Use Google or the links I have provided to find your answers)
Giardia the most common parasitic protistexist as cysts in the feces of animals-
- How does Giardia infect additional animals or humans-
- What are the symptoms of Giardia?
Read the interesting feature section of this Microbewiki link Giardia–
- Why is the fact that giardia lack mitochondria is significant?
- How is this research is giving a new twist to this ancient eukaryote?
- What is the most common pathogenic protist to infect humans in industrialized countries and Why?
- What microscopic parasite causes Malaria and how do humans become infected?
- What is the life cycle of the malaria parasite?
A photosynthetic freshwater algae that eat bacteria.
Why are Volvox and other photosynthetic freshwater algae biologically important?
Cytoplasmic Streaming In Plant Cells- https://www.youtube.com/watch?v=BB5rvjZzgFU
- Describe cytoplasmic streaming and why it is important-
- What is kelp and why are kelp forests important?
The Electron Microscope- Visualizing the Hidden Worlds Inside Your Body