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ss7ja [257]
3 years ago
5

DUE IN 12 MIN Please help me with these, will mark brainliest

Biology
1 answer:
USPshnik [31]3 years ago
5 0

Answer:

I am certain the answer is A sorry if im wrong

Explanation:

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Which substance on the plasma membrane helps identify chemical signals from outside the cell?
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Answer:

carbohydrate chain

Explanation:

Cholesterol is more rigid than some of the other lipids in the membrane. Cholesterol keeps the fatty-acid tails of the phospholipids bilayer from sticking together, which contributes to the fluidity of the plasma membrane. The membrane would become rigid. Transport protein move needed substances or waste materials through the plasma membrane . Carbohydrate defines the cell characteristics and help cells identify chemical signals.

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Which describes the most direct function of the nostrils?
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Answer: they allow air to enter lungs and also permits air into the body

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You assay cell surface oligosaccharides from a blood sample. After determining the composition of the oligosaccharides relative
RSB [31]

Answer:

Here the fucose is linked to galactose by alpha1,2 glycosidic linkage.

Explanation:

Fucose is a deoxy sugar consist of 6 carbon atoms which means fucose is a hexose sugar.

   Fucose does not contain -OH group at C6 carbon that"s why it is termed as deoxy sugar.

     Fucose can link to both Nactylglucosame by alpha-1,6 glycosidic linkage and to galactose by alpha-1, glycosidic linkage  generates the H antigen.

   As donor is blood type B that means fucose is linked to galactoseof H antigen by alpha 1,2glycisidic linkage.

4 0
3 years ago
Fun facts about the endocrine system? Any ideas
Maksim231197 [3]

Answer:

... does this help ?....

Explanation:

The body's hormones, and the glands that produce them, make up the endocrine system. There are eight major glands, and their job is to regulate the body's metabolism, reproduction, growth and sleep. Like the nervous system, the endocrine system is an information signal system.

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A. two continental plates moving together
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