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castortr0y [4]
4 years ago
5

Are cells in the epidermis that are part of the immune system.

Biology
1 answer:
slavikrds [6]4 years ago
8 0
These are dendritic cells; these are professional antigen-presenting cells located in the skin, mucosa and lymphoid tissues and promote immunity 
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A student postulated that the sodium pump directly causes action potentials along neurons. Is this hypothesis reasonable?A) No;
ehidna [41]

Answer:A) No; action potentials result in increased permeability of the plasma membrane to sodium.

Explanation

Action potential is generated when influx of sodium ions occurs through the voltage gated ion channels in the nodes of ranvier cells, into the axoplasm. Provided the stimulus is strong enough more Sodium gated channels open and Sodium ions move in.

As sodium pump only pump sodium ions out of the cells , and it is sodium inlfux that causes action potentia,l this does not cause action potential .

In addition ATPs hydrolysis which supply energy for the sodium pump does not lead to action potential.

4 0
4 years ago
When water is distilled, any solutes dissolved in the water are left behind. Is distilled water hypertonic or hypotonic compared
Illusion [34]

Answer:

Hypotonic

Explanation:

Tap water contains a lot of solutes and ions that are absent in distilled water. The solution that has more solutes (more dissolved solids) will be the <em>hypertonic</em> solution.

Here, distilled water has no solutes, making it <em>hypotonic</em>.

5 0
3 years ago
What are the similarities and differences of viroids and prions?
mars1129 [50]
Viroids are small and infectious RNA molecules.  The term infectious means something to be negative... I think you can assume the rest of that part.  Prions are infectious protein particles, same term infectious.  They cause diseases in humans and animals.Viroids are small and infectious RNA molecules.  The term infectious means something to be negative... I think you can assume the rest of that part.  Prions are infectious protein particles, same term infectious. They cause diseases in humans and animals.

It's all just a search away, just google and summarize and there you go. :P
7 0
3 years ago
Read 2 more answers
explain the role of the digestive system, the respiratory system and the urinary system in the removal of waste. how do these wa
Bezzdna [24]
The function of the digestive system<span> is </span>digestion<span> and absorption.</span>Digestion<span> is the breakdown of food into small molecules, which are then absorbed into the body. The </span>digestive system<span> is divided into two major parts: The </span>digestive tract<span> (alimentary canal) is a continuous tube with two openings: the mouth and the anus.</span>
7 0
3 years ago
Which of the following is most closely associated with nucleus acid? A. Energy storage B. Genetic C. Immunity D. Structure
Marizza181 [45]

Answer:

b.

Explanation:

genetic stuff we were naturally born with for ex . eyes

7 0
4 years ago
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