Name: ___________________________________________ Date: _____________ Per:_______
IB Biology HL 1
Unit 1: Cells Assessment Review
2015-16
Directions: Answer the following questions in two stages.
1. Using your 1st color writing utensil (perhaps a black pen or pencil), answer the questions with the
information that you can recall, using no other resource than your brain. You may be able to give a
lengthy answer, or a fragment of an answer (hopefully!). Whatever you have, get it down. Leave
some space (may vary depending on the question) between each question for the second stage.
2. Return to each question using whatever resources you have (book, notes, classmate, teacher, etc.)
to check the quality of your answer. If you need to make additions, revisions, corrections or to even
provide basic information, make these changes using your 2nd color writing utensil (perhaps a blue
pen). As you subsequently review, you will have a clear indication of where your knowledge is more,
or less, complete.
Note: The following review questions are formulated using the IB Command Terms.
1.1 Introduction to cells (Ch. 1)
EI: the evolution of multicellular organisms allowed cell specialization and cell replacement.
NOS: Looking for trends and discrepancies – although most organisms conform to cell theory, there
are exceptions. Ethical implications of research – research involving stem cells is growing in
importance and raises ethical issues.
Understandings:
1. Outline the cell theory.
2. Discuss evidence for cell theory.
3. Describe the functions of life.
4. Explain the importance of surface area to volume ratio to cell size.
5. What are emergent properties? Discuss how multicellular organisms show emergent
properties.
6. Define cell differentiation.
7. Discuss how specialized tissues are formed in multicellular organisms.
8. Describe the different types of tissues found in animals.
9. Discuss the features of stem cells that make them suitable for therapeutic uses.
Application and Skills:
1. Identify how atypical examples of cells (striated muscle, and aseptated hyphae) question
cell theory.
2. Using Paramecia and Chlorella, identify how a unicellular organism demonstrates the
functions of life.
3. Discuss the use of stem cells to treat Stargardt’s disease (therapeutic use of stem cells)
4. Discuss the ethical implications of using stem cells from
embryos, umbilical cord blood, and from adult tissues.
5. What type of cell is represented in the micrograph? Provide
evidence for your answer.
6. State how to calculate the magnification and actual size of
specimens in micrographs.
7. Calculate the magnification of the micrograph.
8. Calculate the width of the mitochondria.
Tokresource.org
Name: ___________________________________________ Date: _____________ Per:_______
1.2 Ultrastructure Cells (Ch.1)
EI: Eukaryotes have a much more complex cell structure than prokaryotes.
NOS: Developments in scientific research follow improvements in apparatus – the invention of
electron microscopes led to greater understanding of cell structure.
Understandings:
1. Describe prokaryotes and eukaryotes in terms of compartmentalization.
2. Distinguish between electron and light microscopes.
3. Compare features of prokaryotic and eukaryotic cells.
4. State three differences between plant and animal cells.
Applications and Skills:
1. Describe the structures and functions of the organelles within exocrine gland cells of the
pancreas.
2. Describe the structures and functions of the organelles within palisade mesophyll cells of
leaf.
3. Explain the role of mitochondria and chloroplasts.
4. Describe how prokaryotic cells divide.
5. Draw and label the ultrastructure of a prokaryotic cell.
6. Draw and label the ultrastructure of a eukaryotic cell.
7. Using electron micrographs, be able to identify organelles and deduce the function of
specialized cells. (Study the hand out)
1.5 The Origin of Cells
EI: There is an unbroken chain of life from the first cells on Earth to all cells in organisms alive
today.
NOS: Testing the general principles that underlie the natural world: the principle that cells only
come from pre-existing cells needs to be verified.
Understandings:
1. Describe the evidence that cells only come from pre-existing cells.
2. Discuss the hypotheses that suggest first cells arose from non-living material.
3. Explain the origin of eukaryotic cells using the endosymbiotic theory.
Applications and Skills:
1. Describe how Pasteur’s experiments provide evidence that spontaneous generation does
not exist.
Assessment Date: Tuesday, Oct 20
Due Thursday: Review, Practice Problems, Exercise Answers (book questions),
Magnification Practice 1 & 2