Download Bio 1 Unit 2

Unit 2 Test: The Life of a Cell
The Discovery of Cells
Objective 2.1: I can relate advances in microscope technology to discoveries about cells and cell
structure.
Explain the importance of microscopes.
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Objective 2.2: I can compare the operation of a compound light microscope with that of an
electron microscope.
Can live specimens be examined with an electron microscope? Explain.
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Objective 2.3: I can identify main ideas of cell theory.
List the three main ideas of cell theory.
1. ____________________________________________________________________________
2. ____________________________________________________________________________
3. ____________________________________________________________________________
Objective 2.4: I can compare and contrast prokaryotic and eukaryotic cells.
Complete the table by checking the correct column for each statement.
Statement
Prokaryotes
Organisms that have cells lacking internal
membrane-bound structures
Do not have a nucleus
Are either single-celled or made up of many cells
Generally are single-celled organisms
Eukaryotes
Bacteria cells are classified as prokaryotic while fish cells are classified as eukaryotic. Which of
the following best describes the difference between these two organisms’ cells?
a. A prokaryotic cell is larger than a eukaryotic cell.
b. A prokaryotic cell does not have internal membrane-bound structures and a eukaryotic cell
does.
c. A prokaryotic cell is always a plant cell and a eukaryotic cell is always an animal cell.
d. Metabolic functions do not occur in a prokaryotic cell but do occur in a eukaryotic cell.
The Plasma Membrane
Objective 2.5: I can describe how a cell’s plasma membrane functions.
What is the function of a cell’s selectively permeable membrane?
a. To regulate energy production in the cell
b. To keep mitochondria from using nuclear material
c. To maintain a constant lipid-protein ratio in the cell
d. To control materials entering and leaving the cell
Objective 2.6: I can relate the function of the plasma membrane to the fluid mosaic model.
Explain how the words fluid and mosaic describe the plasma membrane.
Fluid: ________________________________________________________________________
Mosaic: _______________________________________________________________________
Eukaryotic Cell Structure
Objective 2.7: I can identify the structure and function of the parts of a typical eukaryotic cell.
Match the cells parts to their functions.
1) Maintains homeostasis ____
2) Supports and protects all cells ____
3) Makes proteins ____
4) Produces food ____
5) Provides internal structure ____
6) Chemical reactions ____
7) Sorts and transports ____
8) Digests material ____
9) Transforms energy ____
10) Cell control center ____
11) Storage ____
A) Cytoskeleton
B) Lysosome
C) Plasma membrane
D) Nucleus
E) Golgi apparatus
F) Ribosome
G) Vacuole
H) Mitochondrion
I) Cell wall
J) Endoplasmic reticulum
K) Chloroplast
Objective 2.8: I can compare and contrast the structures of plant and animal cells.
Write titles for each of the generalized diagrams and then label the parts. Use these choices:
plant cell, animal cell, plasma membrane, chloroplast, lysosome, large vacuole, cell wall.
Which of the following structures is NOT found in both plant and animal cells?
a. chloroplast
b. cytoskeleton
c. ribosomes
d. mitochondria
e. nucleus
Cell Transport
Objective 2.9: I can explain how the process of diffusion, passive transport, and active transport
occur and why they are important to cells.
Explain what is meant by concentration gradient.
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LOW
HIGH
The model above represents a cell in a solution. Use it to answer the following questions.
a. In space A, draw an arrow that shows the direction in which the molecules will move during
passive transport.
Explain your answer: ____________________________________________________________
b. In space B, draw an arrow that shows the direction in which the molecules will move during
active transport.
Explain your answer: ____________________________________________________________
Objective 2.10: I can predict the effect of a hypotonic, hypertonic, or isotonic solution on a cell.
Complete the table by checking the correct column for each statement.
Statement
Isotonic Solution
Hypotonic Solution
1. Causes a cell to swell
2. Doesn’t change the
shape of a cell
3. Causes a cell to shrink
Hypertonic Solution
Cell Growth and Reproduction
Objective 2.11: I can sequence the events of the cell cycle.
Identify the following phases of mitosis. Use these choices: telophase, metaphase, anaphase,
prophase. Then label the diagrams. Use these choices: sister chromatids, centromere, spindle
fibers, centrioles.
Objective 2.12: I can relate the function of a cell to its organization in tissues, organs, and organ
systems.
Which of the following best describes the sequence of organization in a frog’s body from
simplest to most complex?
a. Cells → tissues → organs → organ systems
b. Organs → organ systems → organelles → cells
c. Organelles → cells → organisms → tissue
d. Cells → organelles → tissues → organs
Control of the Cell Cycle
Objective 2.13: I can describe the role of enzymes in the regulation of the cell cycle.
In what ways do enzymes control the cell cycle?
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Objective 2.14: I can distinguish between the events of a normal cell cycle and the abnormal
events that result in cancer.
Describe two ways that can cause the cell cycle to become uncontrolled.
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