Chapter 4- Review For Test Flashcards
Why r cells small??
If a cells grows beyond a certain limit it’ll pop and/or won’t be able to provide for itself
NOW CELL THEORYS
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What increase faster… Surface area vs volume??
Volume
What has type of cell has the most organelles??
Eukaryotes
Cell theories
- Come from other cells
- made of cells
- smallest living unit
The arm and base r used to:
Hold together and allow easier movement of the microscope
Revolving nose piece
Ablility to switch between objectives
Lamp
Easier to see objective slide
Stage
Support slide
Body
Connects eyepiece to microscope
Eyepiece
- 10x magnification
- allows u to see slide
Diaphragm
Adjusts light
Coarse adjustment
- roughly focused object
Fine adjustment
-fine focus
Stage clips
Keeps slide in place
Low power
X4 magnification
High power
10x magnification
Cells plasma membrane
Allows objects to leave and enter cell
Phospholipid bilayer
Semi-permeable
Transport proteins______
Sometimes act as a door into the cell
4 levels of organization
Cells-> tissue-> organ -> organ system
Cytoplasm
- keeps cells in place
- jelly like
- animal and plant
Nucleus
Central center
-animal and plant
Nucleolus
- contains DNA in the cell
- plant and animal
Centrioles
- make fibers
- help with cell division
- animal cell
Mitochondria
- make ATP
- plant and animal
Ribosomes
- make proteins
- plant and animal
Rough Endoplasmic Reticulum
Synthesisis
- steroids
- phospholipids
- proteins
- animals and plant
Smooth ER
- synthesis Steroids and proteins
- animal and plant
Golgi Body
- “shipping and receiving” center
- animals
Vacuoles
Storage for cell
-animal and plant
Lysosomes
- ‘garbage”
- break down things
- animal and plant
Cilia
- used for movement
- animal
Flagella
- used for movement
- animal
Cell wall
- cells shape
- plant
Chloroplast
- makes energy through ATP for the cell
- plant
Diffusion
When somethings Completly and evenly spreads out
Osmosis
When water diffuses
Active transport
Movement of cells through the membrane with energy
Passive transport
Movement of cells through the membrane without energy
Concentration gradient
Process of when particles move from one area to another
Turgor pressure
Pushes the cell membrane against the cell wall
Keeps it from collapsing in
A substance that can pass through the cell membrane (easily)
Oxygen
Hypotonic
Too much
Hypertonic
Shriveled/not enough
Isotonic
Equal
Simple diffusion
-passive transport
•no energy used
•high to low
Facilitated transport
- passive transport
- high to low
- protein needed to cross membrane
Active transport
- uses a form of ATP fro energy
- low to high
- requires a protein or pumps to cross the membrane
Active transport
Movement across the cell membrane
Vesicle
Organelle in cells membrane bound sac
Phagocytosis
Brings things in through endocytosis
Sodium is pumped _____ and potassium is pumped _______
- out
- I’m
NA + ie released _____ of the cell
Out
K+ ion released ____ the cell
In