Solved by a verified expert:UMUC Biology 102/103
Lab3:Cell Structure and Function
On your own and without assistance, complete
3AnswerSheet electronically and submit it via theAssignments Folder by the date listedintheCourse
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Laboratory Manuallocated under Course Content.
Read the introduction and the directions for each exercise/experiment carefully
before completing the exercises/experiments and answering the questions.
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the major similarities and differences between prokaryotic and eukaryotic
is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic
3. Identify three structures which
provide support and protection in a eukaryotic cell.
Experiment 1: Cell
Structure and Function
each of the arrows in the following slide image:
2. What is the difference between the
rough and smooth endoplasmic reticulum?
3. Would an animal cell be able to
survive without a mitochondria? Why or why not?
4. What could you determine about a
specimen if you observed a slide image showing the specimen with a cell wall,
but no nucleus or mitochondria?
5. Hypothesize why parts of a plant, such
as the leaves, are green, but other parts, such as the roots, are not. Use
scientific reasoning to support your hypothesis.
Experiment 2: Osmosis – Direction and Concentration
Tables and Post-Lab Assessment
Table 3: Sucrose Concentration vs.
Initial Volume (mL)
Final Volume (mL)
Net Displacement (mL)
Take a picture of your results. Include a note with
your name and date on an index card in the picture.Insert picture here:
each of the tubing pieces, identify whether the solution inside was hypotonic,
hypertonic, or isotonic in comparison to the beaker solution in which it was
tubing increased the most in volume? Explain why this happened.
do the results of this experiment this tell you about the relative tonicity
between the contents of the tubing and the solution in the beaker?
would happen if the tubing with the yellow band was placed in a beaker of
are excess salts that accumulate in cells transferred to the blood stream so
they can be removed from the body? Be sure to explain how this process works in
terms of tonicity.
you wanted water to flow out of a tubing piece filled with a 50% solution, what
would the minimum concentration of the beaker solution need to be? Explain your
answer using scientific evidence.
is this experiment similar to the way a cell membrane works in the body? How is
it different? Be specific with your response.