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WorksheetsScience test review
Total questions: 29
Worksheet time: 15mins
Osmosis is..
Diffusion of water from high to low concentration
Osmosis is the movement of water through a semipermeable membrane.
It occurs from low solute concentration to high solute concentration.
Osmotic pressure is the force needed to stop water movement.
It's important for nutrient absorption and waste removal in living organisms.
channel proteins
Channel proteins are integral membrane proteins that facilitate the transport of ions and molecules across the cell membrane.
Proteins that serve as tunnels for specific substances through the lipid bilayer are...
They provide a passageway for specific substances, allowing them to move in and out of the cell.
Channel proteins can be gated, meaning they can open or close in response to specific signals, regulating the flow of substances.
Which of the following does NOT require energy?
Passive transport
Osmosis
Diffusion
Filicatcted diffusion
Which of the following is form of active transport (Requiring energy)?
Passive
Osmosis
Diffusion
Sodium-potassium pump
Many of the vessicles from the Golgi body are sent to the cell membrane so their contents can be removed for the call
Golgi apparatus
Through exocytosis
Vesicles
Membrane fusion
Diffusion is the movement of a substance...
Passive transport
Equilibrium
Concentration
from high concentration to low concentration
The cell membrane is said to be___________. This means some materials are able to pass through while others cannot
Semi-permeable
Sloute
Membrane
Selectively permeability
As a result of diffusion, the concentration of many types of substances...
Concentration gradient
eventually becomes balanced on both sides
Transport proteins
The shape of the membrane
Both active transport and facilitated diffusion involve
channel and carrier proteins
Transport proteins
Passive transport
Concentration gradient
What is Homeostasis
Feedback mechanisms
Equilibrium regulation
maintenance of a stable internal conditions
Blanche
What is a concentration gradient
Solvent
Ratio
Solution
difference in the concentration on two sides of membrance
What happens to the movement of solutes when equilibrium is reached
Osomosis
The solutions keep moving in both directions at equal rates
Equilibrium
Diffusion
If the cell is hypnotic inside the membrance
Concentration
Cell lylis
Osomsis
Water will move out of the cell
Simple diffusion does NOT require a membrane protein
True
Flase
Endo and exocytosis do not require energy
Flase
True
Ions pumps (such as sodium potassium pumps) help molecules move against a concentration gradient
Ture
Flase
Facilitated diffusion does NOT require energy
True
Flase
The Plasma membrane is said to be selectively permeable
Electrolytes
Blood
some molecules can pass and some can't
Transportation
What are types of substance is it permeable to _________
I don’t know
Small and non-polar
Sharing electrons
Insoluble
Why types of substance is it impermeable to __________
Water
Hydrophilic
Electrons
Polar-Big
Why substance in letter a above pass through while the substances in letter b above cannot?
Water molecules
I give up
Because there are charged and there size
I don’t know
What is difference between simple diffusion and facilitated diffusion
Movement of the molecules
No energy required
Simple diffusion don't go through the membrane and facilitated don't go through the tunnel
Passive transport
Hyper Environment
I drink water
I don’t know
Water molecules
The water will make it bigger
Hypo Environment
The water always wants to move in the cell
Dosen’t move through the cell
I don’t know
Blank
Isotonic Environment
Osomsis
Water is slower
Water moves in and out the same rate
Blank
The movement of materials from a low concentration to a high concentration against the gradient requiring use of energy (ATP)
Active passive
Simple passive
Transport
Blank
Pincoytosis = The cell________
Drink
Eating
Phagocytosis = The cell______
Drink
Eating
When Water moves in and out the same rate
through exocytosis
Hyper Environment
Isotonic Environment
True
