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liberstina [14]
3 years ago
7

Which of the following statements is/are consistent with the fluid-mosaic model of membranes? (Select all that apply.) The lipid

bilayer and proteins exist side by side without covalent bonds between them. The membrane interior appears granular on an electron micrograph. Integral membrane proteins span the membrane. Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane. Carbohydrates are covalently bonded to the outside of the membrane. None of the Above
Biology
1 answer:
vfiekz [6]3 years ago
4 0

The correct answers are: The lipid bilayer and proteins exist side by side without covalent bonds between them and  Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane

According to fluid mosaic model, there is a lipid bilayer that gives fluidity and in which the protein molecules are embedded.  

The membrane is mosaic because there is a pattern of different types of molecules that are put together. Molecules are constantly moving in two dimensions.

Components of the cell membrane include:

• Phospholipids – Form a bilayer  

• Cholesterol –improves stability and reduce fluidity

• Proteins –integral (transmembrane) or peripheral  

• Sugars-usually attached to proteins.

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A population of wild-flowers was scored for flower color. There were 302 blue (BB) plants, 1857 violet (BR) plants and 811 red (
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frequency of the blue (B) allele = 0.4142

frequency of the red (R) allele = 0.5858

The number of blue plants expected is 509.652

The number of red plants expected is 1019.304

The anticipated number of violet plants is 1441.341

Calculated chi square value

= 84.5320 + 42.5688 + 119.8692\\= 246.97

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Frequency of blue allele is

Frequency of blue allele is equal to sum of frequency of BB and half of frequency of BR

\frac{302}{2970} + \frac{1}{2} \frac{1857}{2970} \\= 0.1016 + 0.3126\\= 0.4142

Frequency of other allele

1- 0.4142\\= 0.5858

Chi Square test

See the attached file

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The number of red plants expected is 1019.304

The anticipated number of violet plants is 1441.341

Calculated chi square value

= 84.5320 + 42.5688 + 119.8692\\= 246.97

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