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tekilochka [14]
3 years ago
12

Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-

colored wings speckled with black. After the Industrial Revolution, peppered moths with dark wings became predominant in the area. mc019-1.jpgmc019-2.jpg Which term best describes the change from more light-colored moths to more dark-colored moths?
Biology
2 answers:
xenn [34]3 years ago
8 0
Adaptation is the answer.
Hitman42 [59]3 years ago
7 0
<h3><u>Answer;</u></h3>

Adaptation;

<h3><u>Explanation;</u></h3>
  • <em><u>Peppered moth could benefit from blending into its environment an adaptation that could be called mimicry</u></em><em><u>. This was an example of natural selection such that nature choose those moths with a favorable characteristic, that is the dark colored moths which were able to hide from their predators and thus survived.</u></em>
  • The <em><u>particular environment in which a particular environment is exposed to gives it the characteristic or the ability to adapt.</u></em> This is how a particular ecosystem works. It is the relationship of organisms within their environment that evolves through time in order for it to survive and propagate into more adapted kinds of species. 



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A leaf preserved in hard transparent material is found in:
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Explain the role of lipids, carbohydrates, and proteins in the cell membrane.
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<h3>What is the function of lipids, carbohydrates, and proteins in the cell membrane?</h3>

The cell membrane is composed of a lipidic bilayer, cholesterol, proteins, and glucans incrusted in between.

⇒ Lipids

  • Phospholipids are amphipathic molecules.

  • They have hydrophilic heads facing the exterior and the interior of the cells and hydrophobic tails that arrange against each other in the interlayer space.

  • Lipids can easily change places with other lipids by lateral diffusion  and transversal diffusion.

  • Their function is to provide structure to the membrane and allow the diffusion of some selected small molecules.

⇒ Cholesterol

These lipidic molecules play a significant role in membrane formation and structure. They are embedded in the membrane in between phospholipidic tails.

⇒ Carbohydrates

Carbohydrates are significant energy store molecules.

Carbohydrates get attached to lipids and proteins on the outer side of the membrane (glycolipids and glycoproteins).

Complexes protein-carbohydrate are used to identify and differentiate the cell and work as receptors.

Carbohydrates are also involved in cell adhesion.

⇒ Proteins

  • Among the proteins, we can find integral proteins and peripheric proteins.

Integral proteins are permanently associated with the membrane. They accomplish many different functions such as substances transport, cellular receptors, and cellular adhesion, among others.

According to how they are incrusted in the lipidic bilayer, integral proteins might be,

→ Transmembrane proteins ⇒ they cross the two lipid layers of the cell membrane.                       

→ Monotypic integral proteins ⇒ they can be found tied to one of the lipidic layers.

Integral proteins provide structure to the plasmatic membrane.

Periferic proteins are in the internal or external surface but not incrusted in the membrane.

In conlusion,

  • Phospholipids are the basic elements of the cell membrane. They are arranged in two layers, and thanks to their motion properties, they allow passive transport (diffusion) of some substances.

  • Proteins provide structure, are involved in facilitated and active transport, and are involved in cell adhesion.

  • Carbohydrates are involved in cell recognition and in receptor complexes.

You can learn more about membrane composition at

brainly.com/question/15651273

#SPJ1

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