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What molecules move across during osmosis?
Water molecules are the primary molecules that move across during osmosis. Osmosis is the movement of water molecules from an area of higher concentration to an area of lower concentration across a selectively permeable membrane.
What molecules during osmosis does not move across the membrane One example?
Large molecules such as proteins are typically unable to move across the membrane during osmosis. One example is starch molecules, which are too large to pass through the membrane pores.
How does surface area affect diffusion rate?
Diffusion is the movement of particles across a selectively permeable membrane, from a high concentration to a low concentration. So the larger the surface area, the quicker the rate of diffusion because there is more space to diffuse in.
What molecule moves across the membrane During osmosis?
Water molecules move across the membrane during osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration across a semi-permeable membrane.
What part of the lung do oxygen molecules diffuse across into the bloodstream?
Oxygen molecules diffuse across the alveolar membrane in the lungs into the bloodstream. This is where gas exchange occurs, with oxygen moving from the alveoli into capillaries surrounding the alveoli.
What is the tightness across the surface of water is called?
Surface tension is the tightness across the surface of water caused by the attraction between water molecules.
What is the tightness across the surfaces of water called?
Surface tension.
When an object is pulling across a level surface at a constant velocity what force is the pulling force equal to?
When an object is moving across a level surface at a constant velocity, the pulling force is equal to the force of friction acting in the opposite direction. This force of friction is equal in magnitude and opposite in direction to the pulling force, resulting in a balanced situation where there is no acceleration.
Why is it easier to pull a box across a surface with an upward angle then push a box across a surface with a downward angle?
It is easier to pull a box up an incline because pulling utilizes more of your body weight for leverage and provides a better grip between the box and the surface. On the other hand, pushing a box down an incline requires overcoming both the force of gravity pulling the box downhill and the friction between the box and the surface, making it more difficult.
The force that opposes the motion of one surface as it moves across another surface?
The force that opposes the motion of one surface as it moves across another surface is called friction. Friction occurs due to the interaction between the molecules of the two surfaces in contact. It acts in the opposite direction to the motion of the object.
Which cell has the fastest rate of diffusion across the surface?
Cells with a larger surface area-to-volume ratio, such as small cells like bacteria or single-celled organisms, will typically have a faster rate of diffusion across the surface. This is because a larger surface area allows for more space for molecules to diffuse in and out of the cell more efficiently.
Which would result in greater friction riding a sled down a snowy alope or pulling it across a sidewalk?
Pulling the sled across a sidewalk would result in greater friction compared to riding it down a snowy slope. This is because the smooth surface of the sidewalk creates more resistance against the sled, while the snow on the slope would provide a smoother and more slippery surface for the sled to slide on with less friction.
When an object is pulled across a level surface at a constant velocity what force is the pulling force equal too?
The pulling force is equal to the force of friction acting in the opposite direction. At constant velocity, the force of friction is equal in magnitude but opposite in direction to the pulling force, resulting in a net force of zero and thus no acceleration.
What force that opposes the motion of one surface as it moves across another surface is referred to as?
The force that opposes the motion of one surface as it moves across another surface is called friction. Friction is caused by the interaction between the molecules of the two surfaces in contact, which creates resistance to motion. It can be influenced by factors such as the roughness of the surfaces and the amount of force pressing them together.
What is the origin of force of friction?
Friction is a force that originates from the interactions between the molecules of two surfaces in contact. When these molecules come into contact, they create resistance to the motion of one surface across the other, resulting in friction.
What molecules move across during osmosis?
Water molecules are the primary molecules that move across during osmosis. Osmosis is the movement of water molecules from an area of higher concentration to an area of lower concentration across a selectively permeable membrane.
What does a carrier protein do in the process of transporting molecules across a cell membrane?
A carrier protein helps transport molecules across a cell membrane by binding to specific molecules and changing shape to move them across the membrane.
