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Cells - CH1+CH2+CH3
Transport In Cells - CH3
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Created by
Sienna Valarino Wahnon
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Cards (60)
What process describes substances
moving
in and out of a cell?
Diffusion
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Which cellular components might be involved in the movement of substances in and out of a cell?
Organelles
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Where do chemical particles move from during diffusion?
High to low
concentration
area
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Which states of matter can undergo diffusion?
Liquids
and
gases
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Why can't solid particles diffuse?
They are
fixed
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What substances do cells need to take in for respiration?
Glucose
and
oxygen
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How do dissolved substances and gases move in and out of cells?
By
diffusion
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What do cells need to get rid of?
Waste products
and chemicals
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What is the net movement of particles from high to low concentration?
Diffusion
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What type of process is diffusion?
A
passive process
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What does it mean for diffusion to be a passive process?
It does not require
energy
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How does temperature affect the rate of diffusion?
Higher temp increases diffusion
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What three factors affect the rate of diffusion?
Temperature
,
concentration gradient
, surface area
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How does the concentration gradient affect diffusion rate?
Steeper
increases diffusion
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What is the concentration gradient?
Difference in
particle numbers
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What is the relationship between concentration gradient steepness and diffusion rate?
Steeper
= faster diffusion
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How does surface area of membrane affect diffusion rate?
Larger
increases
diffusion
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What is the term used for the difference between two areas of concentration?
Concentration gradient
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What happens to the rate of diffusion when there is a greater difference in concentration?
It
becomes
faster
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What type of energy means the particles are supplied with more energy?
Thermal
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What do particles do more of when they have more energy?
Move
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What substances move in and out of cells by diffusion?
Oxygen
,
glucose
,
carbon dioxide
,
urea
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What moves in and out of cells by diffusion?
Dissolved substances
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How are cells adapted for diffusion?
Increased
surface area
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How are the fish gills adapted for diffusion?
Large surface area - more space for
gaseous
exchange
Good blood supply - maintains a steep
diffusion gradient
Thin - short diffusion pathway
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How are the plant roots adapted for diffusion?
Highly branched - large surface area for gas exchange
Root hair cells
- increase surface area for gas exchange - can absorb more water by
osmosis
and mineral ions by
active transport
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How are the plant leaves adapted for diffusion?
Large surface area - more space for
gaseous exchange
Thin - short diffusion pathway
Contain
stomata
(pores) - open and close to allow gas exchange
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What cells is osmosis vital to?
Plant
cells
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What process is defined as the diffusion of water molecules?
Osmosis
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What membrane is involved in osmosis?
Partially
permeable
membrane
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What is a partially permeable membrane?
Membrane only letting certain
particles
pass
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What concentration of water molecules do dilute solutions have?
High
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What concentration of water molecules do concentrated solutions have?
Low
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Why must the concentration of solutes inside body cells stay at the same level?
For them to work properly
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What can differences in solution concentration cause?
Water
to move in/out
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What happens when the water concentration is lower outside the cell?
Water
moves
out
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What happens when the water concentration is
higher
outside the cell?
Water moves in
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What can happen if too much water enters an animal cell?
The cell can
burst
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What can animal cells control to prevent cell damage due to osmosis?
Body
solution
concentrations
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What process is key to the survival of plants?
Osmosis
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