Biology exam 2022: diffusion, osmosis, experiments + active transport

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Biology

12 Terms

1

Tissue fluid

________ surrounds the cells in the body- its just water with oxygen, glucose and other things dissolved in it.

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2

thistle funnel

Water should be drawn through the visking tubing by osmosis and this will force the solution up the glass tube (the ________ has an open bottom where the visking tubing goes)

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3

Happens

________ in both liquids and gases- the particles there are free to move about randomly.

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4

Diffusion

________ is the gradual movement of particles from places where there are lots to where there are fewer.

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5

Substances

________ can move in and out of cells via diffusion, active transport, and osmosis.

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6

Water molecules

________ pass both ways through the membrane during osmosis.

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7

Active transport

________ allows nutrients to be taken into the blood, despite the fact that the concentration gradient is the wrong way.

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8

Definition

________: ‘ Active Transport is the movement of particles against a concentration (i.e: from a lower concentration to a higher concentration) using energy released during respiration.

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9

Technical Definition

________: the ‘ net movement of particles from an area of high concentration to an area of low concentration.

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10

Technical definition

________: ‘ Osmosis is the net movement of water molecules across a partially permeable membrane from a high concentration of water to a low concentration of water.

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11

tissue fluid

The ________ will usually have a different concentration to the fluid inside a cell.

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12

Active transport

________ is used to move substances in and out of cells.

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