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Licemer1 [7]
3 years ago
14

In sigmund freud's theory, the _______ operates according to the pleasure principle. (1 point)

Biology
1 answer:
Romashka [77]3 years ago
4 0
The Id operates according to the pleasure principle!
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Structural proteins that typically assemble into large cables or threads, to provide mechanical support to cells or organisms ar
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Fibrous

Explanation:

Proteins are assembled according to their functions. Fibrous proteins usually provide protection and support to cells. They are made up of polypeptides that have elongated shape and assembles in large cables or threads. These proteins are differentiated from globular proteins by their globular form and repeated units of amino acids.

For example the fibrous proteins involved in horns, hair and nails is alpha-keratin.  Elastin found in skin and ligament is also a fibrous protein. Collagen includes collagen fibrils that have tensile strength of steel is also a fibrous protein found in cartilages and bones.

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3 years ago
What is mixed-acid fermentation? how is methyl red used to determine if a microbe has undergone mixed-acid fermentation?
Vika [28.1K]

Mixed Acid Fermentation is a biological process by which a six carbon sugar is converted into complex mixture of acids. It is an example of anaerobic fermentation reaction which is commonly seen in bacteria.

The fermentation produces lactate, acetate, succinate, formate, ethanol, H_{2} and CO_{2} and their formation depends upon the presence of certain key enzymes in the bacterium.

The Methyl Red test is used in detecting occurring of mixed acid fermentation pathway when glucose is provided to microbes by using ph indicator. If the fermentation pathway has taken place, the mixture of acids will make the solution very acidic and causes red color change. The Methyl Red test belongs to the group called as IMViC tests.

To learn more about  fermentation here

brainly.com/question/13050729

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3 0
1 year ago
Differentiate among a swamp and a marsh. Explain how they are similar and how
trapecia [35]
The difference between the two is that swamps usually have deeper standing water and are wet for longer periods of the year, according to the National Parks Service. Marshes have rich, waterlogged soils that support plant life, according to National Geographic.
Hope it is helpful
3 0
3 years ago
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