Download Review Session: Name: ______ Use your Unit 3 Notes to complete

Review Session: ____________________
Name: ____________
Use your Unit 3 Notes to complete the following questions. This homework
assignment should take 30-45 minutes to complete. Review and study your
SOL questions from Unit 3 packet!
1. Which have cells: abiotic/ biotic things?
2. Bacteria is: prokaryotic /eukaryotic.
3. Is it possible for an organism to be unicellular? What does that
(unicellular) mean?
Yes, it is possible. A cell is the basic unit of life. Unicellular means single-celled (or 1-cell).
4. Is it possible for an organism to be multicellular? What does that (multi-cellular) mean?
Yes, it is possible. Multicellular means that the organism has more than one cell.
5. Which organelle is important for organisms to convert stored energy to usable energy?
Mitochondrion (Mitochondria)
6. What works together to form organs? tissues
7. People are multicellular because they have many different kinds of cells that are specialized to
do different jobs.
8. People begin life as a single cell.
9. On the above pictures:
a. Write out the organelles for the following labels
cell wall
E cell wall
B large vacuole
F ribosomes
C chloroplast
G endoplasmic reticulum
D cell membrane
H mitochondria
b. Label each cell (plant, animal, bacterium)
i. Cell 1 = plant, Cell 2 = bacteria, Cell 3 = animal
c. Label each cell (prokaryotic/eukaryotic)
i. Cell 1 = eukaryotic, Cell 2 = prokaryotic, Cell 3 = eukaryotic
10. On the above pictures:
a. Label 1-5 with the levels of organization of life (from cell -> organism)
Cell tissue  organ  organ system  organism
Answer all the possible essay questions completely:
11. How do you calculate the magnification when viewing an object under a microscope?
Eye piece (10X) * the objective (low = 4X, medium = 10X, high = 40X) = total magnification
12. Write the steps for making a wet mount slide.
1) Gather – slide, cover slip, specimen (must be translucent), water, (stain) dropper
2) Place specimen on slide
3) Place 3 drops of water (approx.) on top of the specimen
4) Place cover slip over slide – MUST be done at an angle to prevent bubbles!
13. Write levels of organization from the simplest to most complex
a. Cell tissue  organ  organ system  organism
14. State the 3 parts of the cell theory
a. Cells are the basic unit of life
b. All living things are made of cells
c. Cells come from from pre-existing cells
15. Why are cells different shapes and sizes?
They are specialized depending on their function – for example, bone cells are rigid to give the
body support, nerve cells are long to send messages, and muscle cells are similar to a rubber
band to extend and contract.
16. What organelles do plant cells have that animal cells do not?
Cell wall, chloroplast, and the vacuoles are large rather than small.
17. Both animal and plant cells contain vacuoles, why do plant cells have a single large vacuole
while animal cells do not?
Plants use their vacuole to add stability and support like a water balloon as well as for storage.
Animals use their vacuoles for storing small bits of nutrients.
18. Compare and contrast the procedure for viewing a specimen under low power vs. high power.
a. Similarities: (ex) They both have greater than 10X magnification because you look through the
ocular on both. You use an objective for both. You look at slides for both. You start by using low
power for both, etc.
b. Differences: (ex) You use the coarse (big) focus knob for low power and the fine (small) focus knob
for high power. The low power objective is 4x so you are looking at 40x magnification. The high
power objective is 40x so you are looking at 400x magnification, etc.
19. Describe how a multicellular organism obtains food and converts it to energy.
Multicellular Organisms
20. Describe how a unicellular organism obtains food and converts it to energy.
21. How are these processes similar? How are they different?