Cell Structure

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Experiment 1
1. For each structure identified, do you think its location affects its ability to function? Why or why not? (Hint: those buried deep in the cell probably do different things than those closer to the cell membrane). Structure does not affect function of the cells, cells have a particular structure that enables them to carry out their function in the best way.

2. Draw a labeled diagram of a small section of the plasma membrane and briefly describe its structure and function.

3. Describe the difference between the animal and plant cells. Plant Cells have cell walls, which makes them appear rectangular or square in shape, these structures are composed of cellulose, hemicellulose and other materials, plant cells have chlorophyll the light absorbing pigment required for photosynthesis.

Animal cells do not have cell walls they only have a cell membrane, this makes their shape round, they have lysosones which plants do not.

Both contain DNA unique to their species or type of plant.

4. Which of the following structures are present in both prokaryotic and eukaryotic cells? Plasma Membrane- present in both cell types
Golgi Apparatus- not present in the prokaryotic cell, present in the eukaryotic cell DNA- both have DNA
Lysosomes and peroxisomes- prokaryotic cells do not have either, eukaryotic cells contain both Cytoplasm- both contain cytoplasm

5. Where is genetic material found in plant cells?
Found on the DNA within the plants nuclei cells.
6. Mitochondria contain their own DNA (circular) and have a double membrane. What explanation for this observation can you come up with? (Hint 1: where else do we see circular DNA?)
(Hint 2: what do you know about the relative age of eukaryotic cells?)

At one point, mitochondria were believed to have been their own organism around the time of prokaryotic life dominance on earth. The prokaryotes would 'eat' the mitochondria, settling them in the cells for a mutual symbiotic...
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