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Bio 201 Exam 1 Cell Structure Questions and Answers

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Bio 201 Exam 1 Cell Structure Questions and Answers Cell - answer- Living structural and functional units enclosed by membrane (200 types of specialized cells in body) Cell biology - answer- study of cellular structure and function has 3 main components 1. plasma membrane 2. cytoplam & organelles 3. nucleus Plasma Membrane - answer- -Phospholipid bilayer -head is hydrophillic/ polar - body is fatty acid tails/ non-polar/hydrophobic flexible support structural support Membrane proteins - answer- -Fluid mosaic model: Proteins distributed unevenly in cell membrane, like a mosaic Integral protein - answer- full peripheral protein - answer- partial Cell junctions: - answer- 1. Tight ( adhesive, never getting apart) 2. Desmosome ( velcro, still together but hard to take apart still) 3. gap ( gate) cilia - answer- hair like structures that beat in unison microvilla - answer- increase surface area of cell membrane : allows for rapid diffusion of digested foods from GI tract into blood stream Cytoplasm - answer- - has organelles -cytosol is the water around it 8 organelles - answer- 1. cytoskeleton 2. lysosomes 3. periosomes 4. mitochondria

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Bio 201 1 Cell Structure
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Bio 201 1 Cell Structure

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Bio 201 Exam 1 Cell Structure
Questions and Answers
Cell - answer- Living structural and functional units enclosed by membrane
(200 types of specialized cells in body)

Cell biology - answer- study of cellular structure and function
has 3 main components
1. plasma membrane
2. cytoplam & organelles
3. nucleus

Plasma Membrane - answer- -Phospholipid bilayer
-head is hydrophillic/ polar
- body is fatty acid tails/ non-polar/hydrophobic

flexible support
structural support

Membrane proteins - answer- -Fluid mosaic model: Proteins distributed unevenly in
cell membrane, like a mosaic

Integral protein - answer- full

peripheral protein - answer- partial

Cell junctions: - answer- 1. Tight ( adhesive, never getting apart)
2. Desmosome ( velcro, still together but hard to take apart still)
3. gap ( gate)

cilia - answer- hair like structures that beat in unison

microvilla - answer- increase surface area of cell membrane : allows for rapid
diffusion of digested foods from GI tract into blood stream

Cytoplasm - answer- - has organelles
-cytosol is the water around it

8 organelles - answer- 1. cytoskeleton
2. lysosomes
3. periosomes
4. mitochondria
5. ribosomes
6. ER (2)
7. Golgi
8. Nucleus
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Bio 201 1 Cell Structure
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Bio 201 1 Cell Structure

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