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mel-nik [20]
3 years ago
10

What is similar about the primary structure of actin and keratin?

Biology
2 answers:
Nimfa-mama [501]3 years ago
8 0
They are both the same because they are both proteins. Ye
777dan777 [17]3 years ago
3 0
They are both proteins
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You have a cup of vegetable oil and a vial full of normal phospholipids. What would you predict would happen if you dropped the
Vilka [71]

Answer:

The phospholipid will form a sphere with the heads inside

Explanation:

Phospholipids are glycerol molecules containing two Fatty acids that is hydrophobia and a hydrophillic negatively charged phosphate.

The phosphate forms the head and the two fatty acids will form the tail

When phospholipid is dropped into a cup of vegetable oil (a lipid). The phospholipid will form a sphere with the heads inside. This is because the heads are hydrophillic and cannot dissolve in the fat hence they will cluster together.

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Water moves into a cell placed in a(n)<br> solution.
erik [133]
Hypotonic. hope this helped
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The survival of organisms is impacted by air temperature. Which two main spheres are involved?
elena-14-01-66 [18.8K]

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Hydrosphere and biosphere

Explanation:

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Which statement correctly describes a characteristic that a scientific
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Answer: Option A.

Explanation:

Scientific measuring tools refers to the equipments or tools use to measure quantities in science examples include measuring cup, measuring cylinder, e.t.c.

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Parkinson disease is associated with demyelination of CNS neurons. a pyramidal nerve tract lesion. insufficient production of ac
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Answer:

The correct option is: <em>a deficiency of dopamine in the substantia nigra.</em>

Explanation:

The substantia nigra is the principal site involved in the physiopathology of Parkinson´s disease.

Cells from this area degenerate and die progressively causing important degeneration in the central nervous system. The cells that die -with no known reason- are those that produce dopamine and proportionate dopaminergic innervation to the encephalon. In fact, almost all the symptoms exhibited by patients with the disease can be explained by the lack of dopamine in the substantia nigra.  

This area uses the neurotransmitter to communicate neurons from the base ganglia. Ganglia are responsible of modulating and modifying movements.

The nigrostriatal system participates in planning and automatic execution of learned movements. When the ganglia activity decreases, so it does the amount and velocity of movements, something typical of the disease.  

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