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Cell Transport

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by

James Wiley

on 7 October 2014

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Transcript of Cell Transport

Transport
Vanilla Balloon
The life function that involves the absorption and circulation of materials throughout an organism.
Why can we smell the vanilla inside the balloon?
Observe the demonstration being performed
by your teacher...
+
TRANSPORT
Absorption
What do you think of when you hear the term ABSORPTION?
Absorption is the process by which digested and dissolved materials enters the cell(s) of an organism.
Key Organelle:
Cell Membrane
Fluid Mosaic Model
The cell membrane is considered a ________ because of all the little parts that are put together to make it up. This arrangement is considered _______ because these small parts can move around (they are not stuck!)
MOSAIC
FLUID
Cell Membrane
Cells need an inside and an outside, so the cell membrane acts as a _________.
boundary
Is the cell impenetrable?
NO!!!
Cell membranes are...
SEMI- PERMEABLE
Which means what?
food:
carbohydrates
sugars, proteins
amino acids
Lipids,salts,
gases:
O2, H2O
Wastes:
ammonia salts

gases:
CO2, H2O
IN
OUT
Semi-Permeable Membranes
Outside
Inside
Passive Transport
Moves small Molecules in and out of cell.
Active Transport
What does the term "Active" mean?
Small molecules
H2O
Glucose/small sugar
Amino Acids
Fatty Acids & Glycerol
Does NOT require ENERGY!!!
Moves from _____ --> ____ Concentration!
HIGH
LOW
What does the term "Passive" mean?
DOES Require ENERGY!!!
Allows larger molecules to enter and exit the cell.
Large molecules
Moves from ____ --> ______ concentration!
LOW
HIGH
Starch/complex sugar
Proteins
Lipids
Passive Transport
1.
Diffusion
Demonstrations
is when molecules move from a region of _______ concentration to a region of ______ concentration until _______________ is reached (then they keep moving, but the concentration is the same all around.)
HIGH
LOW
Equilibrium
What happens to the food
coloring in the beaker?
Demonstrations
What happened after we sprayed the perfume in the corner of the classroom?
P
Classroom
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
Demonstrations
In each demonstration there was an area of _________ concentrated molecules next to an area with a _____ concentration of molecules.
HIGHLY
LOW
When there is a difference in concentration between two areas, a __________________________ is established.
CONCENTRATION GRADIENT
Was there any energy used to transport the molecules in any of these demonstrations? ____
NO!
Which type of transport occurred? ________
PASSIVE
Passive Transport
2.
Osmosis
_________ molecules will move from an area of _______ Concentration to _____ Concentration.
HIGH
LOW
There are two types of passive transport:
the movement of ________ through a membrane based on concentration.
WATER
WATER
OSMOSIS
OSMOSIS
Cells are mostly made up of water, and cell survival depends upon the uptake and loss of water.
TONICITY
Isotonic
Solution
Hypotonic
Solution
Hypertonic
Solution
Which direction will the water move?
What will happen to the cell?
Cell Shrivels
Hypertonic
Cell Bursts
Hypotonic
Cell remains the same
Isotonic
TONICITY
__________________- a solution that has the same concentration of dissolved substances and water molecules as the inside of the cell.
___________________- a solution that has a lower concentration of dissolved substances and a higher concentration of water molecules, than the cell.
____________________- a solution that has a higher concentration of dissolved substances and a lower concentration of water molecules, than the cell.
TONICITY
Plasmolysis
Hypertonic
Flaccid
Isotonic
Hypotonic
Turgid
Which direction will the water move?
What will happen to the cell?
Diffusion (with help)
Protein channels act as doors into, and out of the cell.
Different proteins act for different molecules!
No Energy Required!
Passive Transport
They do not require Energy!!!
OSMOSIS
DIFFUSION
DIFFUSION
W/ HELP
What do these all have in common?
Active Transport
Molecules move from ______ to _____ concentration
HIGH
LOW
Active Transport is a process during which the cell uses ________ or _____
to transport molecules in and out of the cell.
ENERGY
ATP
Molecules move against a concentration gradient from a _____ concentration to a _______ concentration.
LOW
HIGH
Active Transport
A process where very _______ particles are ___________ by a cell's pseudopodia forming a vacuole.
engulfed
Phagocytosis -
Pseudopodia
Pseudo- "fake"
Podia- "foot"
-
"fake foot"
large
"Cell eating"
Engulfed-
Pinocytosis
Active Transport
- "Cell Drinking"
A process where _____ and __________ particles are ________ into a cell, forming a vacuole.
fluid
"sucked"
dissolved
Active Transport
Exocytosis
- "cell excretion"
The process of removing large _________ and _______ from within a cell.
products
wastes
Isotonic Solution
Hypotonic Solution
Hypertonic Solution
"swallowed"
OSMOSIS = DIFFUSION!!!
Circulation
The movement of materials throughout a cell and/or
a multi-cellular organism.
The key organelles that are involved with this life function are the:
Endoplasmic Reticulum
Golgi Bodies
Cytoplasm
____________ - Cytoplasmic streaming
Cyclosis
Transport Summary
Passive Transport
Active Transport
High to Low Concentration
Low to High Concentration
DOES Require Energy!!!
DOES NOT Require Energy!!!
Small Digested Molecules
Large, Complex Molecules
Examples: Diffusion
Osmosis
Facilitated Diffusion
Examples: Phagocytosis
Pinocytosis
Exocytosis
Facilitated Diffusion
Full transcript