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4 years ago

Sort the phrases based on whether they describe or give an example of facilitated diffusion, active transport, or both.

Biology

1 answer:

MatroZZZ [7]4 years ago

8 0

Answer:

1) Movement to area of lower concentration: facilitated diffusion . It consists in the diffusion of a substance through a membrane in favor of its concentration gradient, that is to say that there is movement from an area of greater concentration to another of less concentration.

2) Movement assisted by proteins: both. In the facilitated diffusion the molecules must pass through membrane proteins. In active transport, the proteins involved are called pumps that normally use chemical energy.

3) Requires energy active transport: active transport makes use of energy for the movement of molecules because the movement is against a concentration gradient.

4) Sodium ion transport out of the cell: It is a type of active transport because it requires energy to allow movement against its concentration gradient, the ATP supplies the energy.

5) Glucose transport into cell: It is a type of diffusion facilitated through membrane proteins.

6) Movement across a membrane: both

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Ede4ka [16]

Given:

Measure of box reported by Cristal = 18 cubic units

Measure of box reported by Kyle = 48 cubic units

To find: The reason behind the discrepancies in their reporting.

Answer:

The measurement has been done in 'cubic units'. This indicates that they are measuring the volume of the box. Now, the differences in their reporting can be due to the following reasons:

Unit of measurement: Cristal might have reported in imperial units whereas Kyle must have used metric units. Example, an inch is greater than a centimeter.
Instrument used for measurement: Either Cristal or Kyle are using a non-standardized instrument for recording measurements. The unit spacing between, say Kyle's instrument might be smaller than that of Cristal's. They need to check it against a standard ruler to standardize their rulers.
Least count error: Instruments with a greater least count or bigger gradations are prone to errors than instruments with a smaller least count. Example, a ruler with a least count of 1 inch will not be able to record in decimal units whereas a ruler with a least count of 1 mm can make fine recording.
Rigidity of box: If the box can shrink under different environmental conditions then there will inconsistencies in their recording. Cristal must have recorded its volume in cold temperature whereas Kyle must have recorded its volume in hot temperature. (<em>sounds odd but is true</em>)

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TiliK225 [7]

Answer:

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Explanation:

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