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Ghella [55]
3 years ago
15

Which of these describes transport that uses no energy but requires helper proteins?

Biology
2 answers:
poizon [28]3 years ago
7 0
This is called secondary active transport

Doss [256]3 years ago
3 0
The transport that uses no energy but requires helper proteins is facilitated transport. As clear from the name itself, the transport is 'facilitated' by the proteins.
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Which prediction will most likely describe how friction will affect her findings? The distance for Trial 3 will be greater than
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The complete question is :

Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below.

Which prediction will most likely describe how friction will affect her findings?

Answer:

The distance for Trial 3 will be greater than the distance for Trial 4 because the difference in surface roughness will affect friction.

Explanation:

The frictional force depends greatly on the roughness of the body surfaces. It acts opposite to the direction of motion when two body surfaces have a relative motion between them.

In the context, equal mount of force is applied to push the wooden balls. So the net force which acts on the balls are :

F' = F - f

Here, F = the force applied

         f = force of friction

And f = μ.N (N = reaction force)

Here μ is the coefficient of friction that depends on the surface roughness. The frictional force will be less when the surfaces are smooth. Thus for the trails 3 and trial 4, the distance for trail 3 would be greater than trail 4 as the surface is polished and would offer less friction.

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Answer:

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The biodiversity has been drastically affected by the anthropogenic factors which has caused the deterioration of biodiversity.

The main anthropogenic factors are:

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3. Climate change : Global warming is the result of the industrial revolution initiated by humans in 19th century.

4. Exploitation of natural resources: the humans have continuously exploited human resources for their use.

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Answer:

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