Name: __Answer key___ Pretest score: _____/ 49
Posttest Score: _____/ 49
Pretest: Ch 7.1 & 7.2 Cell Structure and Function
Label the diagram below by filling in the table with the name of each organelle
indicated and its function/job within the cell. Here’s word list to help you out:
Ribosome cytoplasm cell wall mitochondria
nuclear membrane chloroplast lysosome endoplasmic reticulum
vacuole nucleus cell membrane Golgi bodies
Letter: / Name of structure: / Function/job of structure:A / Cytoplasm / Dissolved materials, “fills in” cell, gives structure, some chemical processes
B / Chloroplast / Photosynthesis; makes food for plants
C / Nuclear membrane / Controls in/out of nucleus
D / Nucleus / Controls cell functions, contains DNA/chromosomes
E / Endoplasmic reticulum / Makes/packages materials (fats and proteins) for transport inside cell
F / Ribosome / Make proteins
G / Golgi Apparatus / Modifies proteins/materials from ER for use outside or inside cell
H / Central Vacuole / Stores water for plant cell
I / Lysosome / Holds digestive enzymes
J / Cell membrane / Controls what goes into and out of cell
K / Mitochondria / makes energy (ATP) from food for cell functions; cell respiration
L / Cell Wall / Support/structure for plant cells
25. – 26. Which cell above is a plant cell and which is an animal cell? How can you
tell?
Cell 1 …animal…has no central vacuole, no cell wall,
no chloroplasts
Cell 2…plant… has central vacuole, cell wall,
chloroplasts
Bacterial cells are very different. Label the parts of a bacterial cell and tell their function. Here is a word list: DNA pili plasmid
ribosome cell wall cell membrane flagella
41 - 43. What is the Cell Theory? (3 parts)
3 parts:
· All living things made of cells
· Cells are basic structure and function of living things (can do all things living things can do)
· Cells only come from other cells
44. – 45. What is a prokaryotic cell (i.e. what special things does it have or not have?)
Give at least 1 example of a prokaryotic cell.
Simpler (older) form of life, like bacteria and archaea
No membrane-bound organelles…no lysosomes, vacuoles, nucleus, mitochondria, Golgi bodies, endoplasmic reticulum, etc. All cell functions take place in the cytoplasm rather than in specific organelles.
46. – 47. What is a eukaryotic cell (i.e. what special things does it have or not have?)
Give at least 1 example of a eukaryotic cell.
More complex forms of life (plants, animals, fungi, protists)
Have organelles w/membranes…lysosomes, vacuoles, nucleus, mitochondria, golgi bodies, endoplasmic reticulum, etc. Cell functions take place in specific organelles.
48. – 49. The cell membrane is called a “fluid mosaic.” Explain the structure of the
cell membrane and how it is a fluid mosaic. Drawing a picture might help, but is not necessary.
Phospholipid bilayer…2 layers of molecules called phospholipids (fats with a phosphate group). Phosphate group is on outside/inside of cell, fats are between…within the membrane itself.
Then there are large proteins/carbohydrates embedded (mosaic) in this that are free to move around (fluid). The proteins/carbohydrates mark the cell, and help the cell perform its functions and help move things into and out of the cell.
25. Which cell above is a plant cell and which is an animal cell? How can you tell
(what unique characteristics does each have)?
26. What is the Cell Theory?
27. What is a prokaryotic cell (i.e. what special things does it have or not have?) Give
at least 1 example of a prokaryotic cell.
28. What is a eukaryotic cell (i.e. what special things does it have or not have?) Give
at least 1 example of a eukaryotic cell.
29. – 30. The cell membrane is called a “fluid mosaic.” Explain the structure of the
cell membrane and how it is a fluid mosaic. Drawing a picture might help, but is not necessary.
Phospholipid bilayer…2 layers of molecules called phospholipids (fats with a phosphate group). Phosphate group is on outside/inside of cell, fats are between…within the membrane itself.
Then there are large proteins/carbohydrates embedded (mosaic) in this that are free to move around (fluid). The proteins/carbohydrates mark the cell, and help the cell perform its functions and help move things into and out of the cell.