Bio 201 Exam 2 (chapter 4 & 5) Review Questions and Correct Answers
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Course
BIO 201
Institution
BIO 201
The Cell Theory All living things are composed of cells Cells are the basic unit of life Cells can only come from other cells
Light microscope Resolution up to 1,000x
Electron Microscope SEM- bounced off TEM- through
Total surface area height × width × # of sides × # of cubes
Total volume he...
Bio 201 Exam 2 (chapter 4 & 5) Review
Questions and Correct Answers
The Cell Theory ✅All living things are composed of cells
Cells are the basic unit of life
Cells can only come from other cells
Light microscope ✅Resolution up to 1,000x
Electron Microscope ✅SEM- bounced off
TEM- through
Total surface area ✅height × width × # of sides × # of cubes
Total volume ✅height × width × length × # of cubes
surface to volume ratio ✅volume per cube
total surface area÷ total volume
Common features ✅Plasma membrane
Cytoplasm
Cytosol
Plasma membrane ✅phospholipid bilayer, defines boundary of the cell
Prokaryotic cells store their DNA in a _________ ✅nucleoid
, Fimbraie ✅attachment
Conjugation pilus ✅elongated, hallow appendage use for DNA exchange
Cell wall ✅Provides shape
Glycocalyx ✅gel like coating outside of cell wall
helps retain moisture and aids in cell recognition
Ribosome ✅protein synthesis
Flagella ✅rotating filament present in bacteria, forward movement
Nucleoid ✅location of bacterial chromosome
This regulates enter and exit of molecules ✅plasma membrane
Mesosome ✅Plasma membrane that folds into cytoplasm and increase surface area
Eukaryotic cell structures ✅Nucleus
Nucleolus
Nuclear pore
Double membrane
Ribosomes
Rough ER
Smooth ER
Golgi apparatus
Vesicles
Lysosome
Perioxsome
Vacuole
Mitochondria
Cytoskeleton (actin filaments, intermediate filaments, microtubules,centrioles)
Motor parts (cilia and flagella)
Golgi apparatus ✅receives product from both rough and smooth ER, refines and
repackages products
Vesicle ✅tiny container
Rough ER ✅closest to the nucleus covered in ribosomes
function: make and pack proteins
amylase is made on ribosomes
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