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balu736 [363]
3 years ago
14

A phospholipid bilayer with equal amounts of saturated and unsaturated fatty acids displays a specific permeability to glucose.

What effect will increasing the proportion of unsaturated fatty acids in the bilayer have on the membrane's permeability to glucose?
A. Permeability to glucose will stay the same.
B. Permeability to glucose will increase.
C. Permeability will decrease initially then increase as the bilayer fills with glucose.
D. Permeability to glucose will decrease
Biology
1 answer:
Maksim231197 [3]3 years ago
3 0

Answer

The correct answer is option B

B. Permeability to glucose will increase.

Explanation:

A phospholipid bilayer is a thin polar membrane comprising two lipid molecules. It regulates the diffusion of ions and proteins and is impermeable to most water molecules. A balances amount of saturated and unsaturated phospholipid regulates the permeability of glucose, allowing only a specific amount to pass through but when there's more unsaturation, permeability increases.

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Drag each label to the correct location on the chart. Classify each process as weathering or erosion. PLEASE HELP me (I'm stuck)
Andreas93 [3]

Lets do numbering of the labels to make labelling clear.

1. The Colorado River carves land in Arizona to form the Grand Canyon.

2. Cracks form in a sandstone wall surrounding a house.

3. A marble statue near the science museum is changing color due to rainfall.

4. After a rainstorm, soil and rock pieces litter the roadways.

5. The sand dunes in the Sahara Desert are changing shape.

Answer:

Weathering:

2. Cracks form in a sandstone wall surrounding a house.

3.A marble statue near the science museum is changing color due to rainfall.

Erosion:

1. The Colorado River carves land in Arizona to form the Grand Canyon.

4. After a rainstorm, soil and rock pieces litter the roadways.

5. The sand dunes in the Sahara Desert are changing shape.

Explanation:

Weathering and erosion, in both the processes rocks are broken down into particles but both the processes are different from each other. Weathering can be physical, chemical or biological process in which rock particles degrade without any movement while erosion is purely a movement of sediments in which particles move from one place to another under the influence of water and wind.

So, on the basis of this difference we can classify each label to the correct location:

<u>Weathering (no movement of particles after degradation):</u>

2. Cracks in a sandstone wall of a house.

3. Changing color of marble statue due to rainfall.

<u>Erosion (Movement of particles from one place to another):</u>

1. Formation of Grand Canyon, when the Colorado River carves land in Arizona.

4. Soil and rock pieces litter on roadways after rainstorms.

5. Changing shape of dunes in sahara desert.

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Vanyuwa [196]

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